HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file(). send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append. Untrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at attacker chosen paths.

The remote AlmaLinux 9 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:36187 advisory.

    * perl-HTTP-Daemon: [HTTP::Daemon:](HTTP::Daemon:) Arbitrary code execution via OS command injection in     send_file() (CVE-2026-8450)

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

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

The remote Oracle Linux 8 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-36188 advisory.

    - Fix CVE-2026-8450: send_file() shell-magic injection via 2-arg open()

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

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

The remote MiracleLinux 8 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2026-1220:01 advisory.

    * perl-HTTP-Daemon: [HTTP::Daemon:](HTTP::Daemon:) Arbitrary code execution via OS command injection in     send_file() (CVE-2026-8450)

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

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

The remote RockyLinux 10 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:36189 advisory.

    * perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()     (CVE-2026-8450)

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

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

The remote RockyLinux 9 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:36187 advisory.

    * perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()     (CVE-2026-8450)

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

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

The remote RockyLinux 8 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:36188 advisory.

    * perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()     (CVE-2026-8450)

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

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

The remote Oracle Linux 9 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-36187 advisory.

    - Fix CVE-2026-8450: send_file() shell-magic injection via 2-arg open()

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

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

The remote AlmaLinux 8 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:36188 advisory.

    * perl-HTTP-Daemon: [HTTP::Daemon:](HTTP::Daemon:) Arbitrary code execution via OS command injection in     send_file() (CVE-2026-8450)

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

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

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:36189 advisory.

    The perl-HTTP-Daemon package includes the HTTP::Daemon class, a subclass of IO::Socket::IP. Instances of     the HTTP::Daemon class are HTTP/1.1 servers that listen on a socket for incoming requests.

    Security Fix(es):

    * perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()     (CVE-2026-8450)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:36188 advisory.

    The perl-HTTP-Daemon package includes the HTTP::Daemon class, a subclass of IO::Socket::IP. Instances of     the HTTP::Daemon class are HTTP/1.1 servers that listen on a socket for incoming requests.

    Security Fix(es):

    * perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()     (CVE-2026-8450)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:36187 advisory.

    The perl-HTTP-Daemon package includes the HTTP::Daemon class, a subclass of IO::Socket::IP. Instances of     the HTTP::Daemon class are HTTP/1.1 servers that listen on a socket for incoming requests.

    Security Fix(es):

    * perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()     (CVE-2026-8450)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote SUSE Linux SLES16 / SLES_SAP16 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2026:22187-1 advisory.

    This update for perl-HTTP-Daemon fixes the following issue

    - CVE-2026-8450: HTTP: Daemon versions before 6.17 for Perl allow OS command injection via send_file()     (bsc#1266370).

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

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

The remote Debian 11 / 12 host has a package installed that is affected by a vulnerability as referenced in the dla-4639 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4639-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Santiago Ruano Rincn     June 21, 2026                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libhttp-daemon-perl     Version        : 6.12-1+deb11u2 6.16-1+deb13u1~deb12u1     CVE ID         : CVE-2026-8450     Debian Bug     : 1138050

    A flaw was discovered in libhttp-daemon-perl, a simple http server class     for Perl, which may result in the execution of arbitrary shell commands     or file overwrite when processing specially crafted input.

    For Debian 11 bullseye, this problem has been fixed in version     6.12-1+deb11u2.

    For Debian 12 bookworm, this problem has been fixed in version     6.16-1+deb13u1~deb12u1.

    We recommend that you upgrade your libhttp-daemon-perl packages.

    For the detailed security status of libhttp-daemon-perl please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libhttp-daemon-perl

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

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

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

The remote Debian 13 host has a package installed that is affected by a vulnerability as referenced in the dsa-6358 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6358-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     June 21, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : libhttp-daemon-perl     CVE ID         : CVE-2026-8450     Debian Bug     : 1138050

    A flaw was discovered in libhttp-daemon-perl, a simple http server class     for Perl, which may result in the execution of arbitrary shell commands     or file overwrite when processing specially crafted input.

    For the stable distribution (trixie), this problem has been fixed in     version 6.16-1+deb13u1.

    We recommend that you upgrade your libhttp-daemon-perl packages.

    For the detailed security status of libhttp-daemon-perl please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libhttp-daemon-perl

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

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

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2026:2442-1 advisory.

    - CVE-2026-8450: Fixed OS command injection via send_file() (bsc#1266370).

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the FEDORA-2026-f276b2154e advisory.

    Changes:

    6.17      2026-05-19 23:11:06Z

      - Fix CVE-2026-8450 (affects 6.15 and earlier): 2-arg open() in         send_file() enabled RCE / arbitrary file write / response-body         exfiltration when a string argument was derived from attacker-         influenced input. send_file() now uses 3-arg open() with an         explicit '<' read mode, so the path is always treated as a literal         filename and 2-arg open() shell-magic shapes ('| cmd', 'cmd |',         '> path', etc.) are no longer interpreted. send_file() now also         returns '0E0' (true zero) on a successful zero-byte transfer so         callers can distinguish empty file from open failure (undef). See         https://www.cve.org/CVERecord?id=CVE-2026-8450 for the advisory.
        Reported and patched by Stig Palmquist (stigtsp). (Stig Palmquist,         Olaf Alders)

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

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

The remote SUSE Linux SLES12 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:2408-1 advisory.

    - CVE-2026-8450: Fixed OS command injection via send_file() (bsc#1266370).

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the FEDORA-2026-8982379b5c advisory.

    Changes:

    6.17      2026-05-19 23:11:06Z

      - Fix CVE-2026-8450 (affects 6.15 and earlier): 2-arg open() in         send_file() enabled RCE / arbitrary file write / response-body         exfiltration when a string argument was derived from attacker-         influenced input. send_file() now uses 3-arg open() with an         explicit '<' read mode, so the path is always treated as a literal         filename and 2-arg open() shell-magic shapes ('| cmd', 'cmd |',         '> path', etc.) are no longer interpreted. send_file() now also         returns '0E0' (true zero) on a successful zero-byte transfer so         callers can distinguish empty file from open failure (undef). See         https://www.cve.org/CVERecord?id=CVE-2026-8450 for the advisory.
        Reported and patched by Stig Palmquist (stigtsp). (Stig Palmquist,         Olaf Alders)

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

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

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8419-1 advisory.

    It was discovered that HTTP-Daemon incorrectly handled untrusted input under certain circumstances. A     remote attacker could possibly use this issue to execute arbitrary commands, create or overwrite arbitrary     files, or expose sensitive information.

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1794 advisory.

    HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file().

    send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes:
    '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append.

    Untrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form     ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or     truncate files at attacker chosen paths. (CVE-2026-8450)

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

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

The version of perl-HTTP-Daemon installed on the remote host is prior to 6.01-8. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3341 advisory.

    HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file().

    send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes:
    '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append.

    Untrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form     ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or     truncate files at attacker chosen paths. (CVE-2026-8450)

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

Note that Nessus has not tested for this issue 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.

  - HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file(). send_file() opens     its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd     |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append. Untrusted input     passed to send_file() can run OS commands at the daemon process UID. The read-pipe form ('cmd |') also     leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at     attacker chosen paths. (CVE-2026-8450)

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

ID	Name	Product	Family	Severity
325756	AlmaLinux 9 : perl-HTTP-Daemon (ALSA-2026:36187)	Nessus	Alma Linux Local Security Checks	high
325726	Oracle Linux 8 : perl-HTTP-Daemon (ELSA-2026-36188)	Nessus	Oracle Linux Local Security Checks	high
325725	MiracleLinux 8 : perl-HTTP-Daemon-6.01-24.el8_10 (AXSA:2026-1220:01)	Nessus	Miracle Linux Local Security Checks	high
325661	RockyLinux 10 : perl-HTTP-Daemon (RLSA-2026:36189)	Nessus	Rocky Linux Local Security Checks	high
325652	RockyLinux 9 : perl-HTTP-Daemon (RLSA-2026:36187)	Nessus	Rocky Linux Local Security Checks	high
325556	RockyLinux 8 : perl-HTTP-Daemon (RLSA-2026:36188)	Nessus	Rocky Linux Local Security Checks	high
325532	Oracle Linux 9 : perl-HTTP-Daemon (ELSA-2026-36187)	Nessus	Oracle Linux Local Security Checks	high
325500	AlmaLinux 8 : perl-HTTP-Daemon (ALSA-2026:36188)	Nessus	Alma Linux Local Security Checks	high
325468	RHEL 10 : perl-HTTP-Daemon (RHSA-2026:36189)	Nessus	Red Hat Local Security Checks	high
325466	RHEL 8 : perl-HTTP-Daemon (RHSA-2026:36188)	Nessus	Red Hat Local Security Checks	high
325459	RHEL 9 : perl-HTTP-Daemon (RHSA-2026:36187)	Nessus	Red Hat Local Security Checks	high
322897	SUSE SLES16 Security Update : perl-HTTP-Daemon (SUSE-SU-2026:22187-1)	Nessus	SuSE Local Security Checks	high
321928	Debian dla-4639 : libhttp-daemon-perl - security update	Nessus	Debian Local Security Checks	high
321871	Debian dsa-6358 : libhttp-daemon-perl - security update	Nessus	Debian Local Security Checks	high
321753	SUSE SLED15 / SLES15 Security Update : perl-HTTP-Daemon (SUSE-SU-2026:2442-1)	Nessus	SuSE Local Security Checks	high
321732	Fedora 43 : perl-HTTP-Daemon (2026-f276b2154e)	Nessus	Fedora Local Security Checks	high
321644	SUSE SLES12 Security Update : perl-HTTP-Daemon (SUSE-SU-2026:2408-1)	Nessus	SuSE Local Security Checks	high
321631	Fedora 44 : perl-HTTP-Daemon (2026-8982379b5c)	Nessus	Fedora Local Security Checks	high
320590	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : HTTP-Daemon vulnerability (USN-8419-1)	Nessus	Ubuntu Local Security Checks	critical
319879	Amazon Linux 2023 : perl-HTTP-Daemon, perl-HTTP-Daemon-tests (ALAS2023-2026-1794)	Nessus	Amazon Linux Local Security Checks	critical
319797	Amazon Linux 2 : perl-HTTP-Daemon, --advisory ALAS2-2026-3341 (ALAS-2026-3341)	Nessus	Amazon Linux Local Security Checks	critical
317090	Linux Distros Unpatched Vulnerability : CVE-2026-8450	Nessus	Misc.	high

Detections

Analytics

CVE-2026-8450

high

Tenable Plugins

high

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critical

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