OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8405-1 advisory.

    Ariel Silver discovered that CUPS incorrectly handled username comparisons during authorization checks. A     local attacker could possibly use this issue to gain unauthorized access to restricted operations.
    (CVE-2026-27447)

    Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled notify-recipient-uri values in the RSS     notifier. A remote attacker could possibly use this issue to overwrite lp-writable files and cause a     denial of service. (CVE-2026-34978)

    Jacob Newman discovered that CUPS incorrectly handled filter option strings when processing job     attributes. An attacker could use this issue to cause CUPS to crash, resulting in a denial of service, or     possibly execute arbitrary code. (CVE-2026-34979)

    Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled page-border values in shared PostScript     queues. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-34980)

    Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled localhost authentication to attacker-     controlled IPP services. A local attacker could possibly use this issue to overwrite arbitrary files and     execute arbitrary code. (CVE-2026-34990)

    Tomer Fichman discovered that CUPS incorrectly handled negative job-password-supported values. A local     attacker could possibly use this issue to cause CUPS to crash, resulting in a denial of service.
    (CVE-2026-39314)

    Tomer Fichman discovered that CUPS incorrectly handled temporary printer deletion. An attacker could     possibly use this issue to cause CUPS to crash, resulting in a denial of service, or to execute arbitrary     code. (CVE-2026-39316)

    Tomer Fichman discovered that CUPS incorrectly handled certain malformed SNMP responses. An attacker could     possibly use this issue to obtain sensitive information. (CVE-2026-41079)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the cups packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c)     allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-     supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes     validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a     33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's     Restart=on-failure, an attacker can repeat the crash for sustained denial of service.(CVE-2026-39314)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-     insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user     to gain unauthorized access to restricted operations by using a user with a username that differs only in     case from an authorized user. At time of publication, there are no publicly available     patches.(CVE-2026-27447)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client     can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-     border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and     reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A     follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as     /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when     temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls     cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving     cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently     dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap     grooming, this can be leveraged for code execution.(CVE-2026-39316)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building     filter option strings from job attribute. At time of publication, there are no publicly available     patches.(CVE-2026-34979)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-     controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to     drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-     is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs.
    Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a     sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly     available patches.(CVE-2026-34990)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g.,     rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that     is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode     0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This     PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the     job cache and previously queued jobs disappear. At time of publication, there are no publicly available     patches.(CVE-2026-34978)

Tenable has extracted the preceding description block directly from the EulerOS cups security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the cups packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building     filter option strings from job attribute. At time of publication, there are no publicly available     patches.(CVE-2026-34979)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-     controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to     drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-     is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs.
    Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a     sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly     available patches.(CVE-2026-34990)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when     temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls     cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving     cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently     dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap     grooming, this can be leveraged for code execution.(CVE-2026-39316)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client     can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-     border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and     reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A     follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as     /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g.,     rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that     is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode     0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This     PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the     job cache and previously queued jobs disappear. At time of publication, there are no publicly available     patches.(CVE-2026-34978)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c)     allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-     supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes     validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a     33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's     Restart=on-failure, an attacker can repeat the crash for sustained denial of service.(CVE-2026-39314)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-     insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user     to gain unauthorized access to restricted operations by using a user with a username that differs only in     case from an authorized user. At time of publication, there are no publicly available     patches.(CVE-2026-27447)

Tenable has extracted the preceding description block directly from the EulerOS cups security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20812-1 advisory.

    This update for cups fixes the following issues

    - CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).
    - CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss     (bsc#1261571).
    - CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).
    - CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over     the network       (bsc#1261569).
    - CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).
    - CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service     (bsc#1261743).
    - CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).
    - CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory     disclosure       (bsc#1263116).

    Changes for cups:

    - Version upgrade to 2.4.19.

    - Version upgrade to 2.4.18.

    - Version upgrade to 2.4.17:

     * The scheduler followed symbolic links when cleaning out      its temporary directory (Issue #1448)
     * Updated `cupsFileGetConf` and `cupsFilePutConf` to escape      more characters.
     * Updated man page `cancel` (Issue #984)
     * Updated `cupsRasterReadHeader` to validate more of the      page header values (Issue #1501)
     * Fixed an issue with the class/printer CGI name checking.
     * Fixed infinite loop in `http_write()` on busy print servers      (Issue #827)
     * Fixed potential TLS blocking issues (Issue #1128)
     * Fixed a job history bug in the scheduler (Issue #1440)
     * Fixed notifier logging bug that would result in nul bytes      getting into the log (Issue #1450)
     * Fixed possible use-after-free in `cupsdReadClient()`      (Issue #1454)
     * Fixed a document format bug in the IPP backend (Issue #1457)
     * Fixed DRAIN_OUTPUT race condition (Issue #1461)
     * Fixed a bug when then `ippFindXxx` and `ippSetXxx` functions      were mixed.
     * Fixed the mapping of supply type keywords to SNMP names.
     * Fixed a bug in the IPP backend when SNMP was disabled.
     * Fixed a crash bug in the rastertoepson filter.
     * Fixed a bug in cgiCheckVariables.
     * Fixed handling read/write errors with OpenSSL (Issue #1506)
     * Fixed handling rehandshake error in `_httpTLSRead`      (Issue #1508)
     * Fixed a debug printf bug on Windows (Issue #1529)
     * Fixed a recursion issue with encoding of nested collections      (Issue #1539)
     * Fixed parsing of the `LimitRequestBody`, `MaxLogSize`,      and `MaxRequestSize` directives in cupsd.conf (Issue #1540)
     * Fixed a parsing bug in `ipptool` (Issue #1542)
     * Fixed blank line detection in the `rastertolabel` filter      (Issue #1545)
     * Fixed `httpPeek` edge case on compressed streams

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0276 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-34990:
    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-     controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to     drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-     is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs.
    Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a     sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly     available patches.

    CVE-2026-34980:
    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client     can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-     border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and     reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A     follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as     /usr/bin/vim as lp. At time of publication, there are no publicly available patches.

    CVE-2026-34979:
    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building     filter option strings from job attribute. At time of publication, there are no publicly available patches.

    CVE-2026-34978:
    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g.,     rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that     is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode     0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This     PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the     job cache and previously queued jobs disappear. At time of publication, there are no publicly available     patches.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the cups package has been released.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1635 advisory.

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g.,     rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that     is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode     0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This     PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the     job cache and previously queued jobs disappear. At time of publication, there are no publicly available     patches. (CVE-2026-34978)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building     filter option strings from job attribute. At time of publication, there are no publicly available patches.
    (CVE-2026-34979)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client     can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-     border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and     reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A     follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as     /usr/bin/vim as lp. At time of publication, there are no publicly available patches. (CVE-2026-34980)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-     controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to     drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-     is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs.
    Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a     sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly     available patches. (CVE-2026-34990)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c)     allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-     supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes     validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a     33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's     Restart=on-failure, an attacker can repeat the crash for sustained denial of service. (CVE-2026-39314)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when     temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls     cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving     cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently     dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap     grooming, this can be leveraged for code execution. (CVE-2026-39316)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of cups installed on the remote host is prior to 1.6.3-51. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3279 advisory.

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g.,     rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that     is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode     0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This     PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the     job cache and previously queued jobs disappear. At time of publication, there are no publicly available     patches. (CVE-2026-34978)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building     filter option strings from job attribute. At time of publication, there are no publicly available patches.
    (CVE-2026-34979)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client     can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-     border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and     reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A     follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as     /usr/bin/vim as lp. At time of publication, there are no publicly available patches. (CVE-2026-34980)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-     controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to     drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-     is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs.
    Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a     sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly     available patches. (CVE-2026-34990)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-bce5853e95 advisory.

    2.4.17 - security fixes for CVE-2026-39316, CVE-2026-39314, CVE-2026-34979, CVE-2026-34990,     CVE-2026-27447, CVE-2026-34978


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-34454fdb74 advisory.

    2.4.17 - security fixes for CVE-2026-39316, CVE-2026-39314, CVE-2026-34979, CVE-2026-34990,     CVE-2026-27447, CVE-2026-34978


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-82a2214b53 advisory.

    2.4.17 - security fixes for CVE-2026-39316, CVE-2026-39314, CVE-2026-34979, CVE-2026-34990,     CVE-2026-27447, CVE-2026-34978


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of cups installed on the remote host is prior to 2.4.17. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-107-01 advisory.

    New cups packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the cups security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-7d1173fd68 advisory.

    Automatic update for cups-2.4.17-1.fc45.

    ##### **Changelog**

    ```
    * Fri Apr 17 2026 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.4.17-1
    - 2.4.17 (fedora#2456363, fedora#2456362, fedora#2454994, fedora#2454993,       fedora#2454992, fedora#2454990)

    ```

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g.,     rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that     is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode     0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This     PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the     job cache and previously queued jobs disappear. At time of publication, there are no publicly available     patches. (CVE-2026-34978)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
320390	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : CUPS vulnerabilities (USN-8405-1)	Nessus	Ubuntu Local Security Checks	medium
320278	EulerOS 2.0 SP13 : cups (EulerOS-SA-2026-2325)	Nessus	Huawei Local Security Checks	medium
320246	EulerOS 2.0 SP13 : cups (EulerOS-SA-2026-2282)	Nessus	Huawei Local Security Checks	medium
319997	EulerOS 2.0 SP11 : cups (EulerOS-SA-2026-2199)	Nessus	Huawei Local Security Checks	medium
319954	EulerOS 2.0 SP11 : cups (EulerOS-SA-2026-2237)	Nessus	Huawei Local Security Checks	medium
317701	openSUSE 16 Security Update : cups (openSUSE-SU-2026:20812-1)	Nessus	SuSE Local Security Checks	medium
314506	TencentOS Server 4: cups (TSSA-2026:0276)	Nessus	Tencent Local Security Checks	medium
312114	Photon OS 4.0: Cups PHSA-2026-4.0-1008	Nessus	PhotonOS Local Security Checks	medium
311396	Photon OS 5.0: Cups PHSA-2026-5.0-0837	Nessus	PhotonOS Local Security Checks	medium
311327	Amazon Linux 2023 : cups, cups-client, cups-devel (ALAS2023-2026-1635)	Nessus	Amazon Linux Local Security Checks	medium
311214	Amazon Linux 2 : cups, --advisory ALAS2-2026-3279 (ALAS-2026-3279)	Nessus	Amazon Linux Local Security Checks	medium
310205	Fedora 44 : cups (2026-bce5853e95)	Nessus	Fedora Local Security Checks	medium
309195	Fedora 42 : cups (2026-34454fdb74)	Nessus	Fedora Local Security Checks	medium
307661	Fedora 43 : cups (2026-82a2214b53)	Nessus	Fedora Local Security Checks	medium
307392	Slackware Linux 15.0 / current cups Multiple Vulnerabilities (SSA:2026-107-01)	Nessus	Slackware Local Security Checks	medium
307391	Fedora 45 : cups (2026-7d1173fd68)	Nessus	Fedora Local Security Checks	medium
304956	Linux Distros Unpatched Vulnerability : CVE-2026-34978	Nessus	Misc.	medium

Detections

Analytics

CVE-2026-34978

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium