OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever any client connection has an in-flight Send-Document operation, without matching that connection to the job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs is exhausted and further legitimate print submissions are rejected. The suppression ends when the held connection closes.

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1791832189 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

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

The CentOS Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS6:CLSA-2026:1791920953 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

  - OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in     job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job()     converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently     calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted     Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an     accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when     permitted by listener and access-control configuration. (CVE-2026-107890)

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

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1792072476 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

  - OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in     job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job()     converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently     calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted     Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an     accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when     permitted by listener and access-control configuration. (CVE-2026-107890)

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout
    handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever
    any client connection has an in-flight Send-Document operation, without matching that connection to the
    job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request
    containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete
    jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs
    is exhausted and further legitimate print submissions are rejected. The suppression ends when the held
    connection closes. (CVE-2026-107885)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1791916787 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

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

The CentOS Linux 8.5 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.5:CLSA-2026:1791916765 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

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

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1791915424 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

  - OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management. When CUPS-Add-Modify-     Class replaces an existing class member list, add_class() frees pclass->printers without clearing the     pointer. If subsequent validation fails, the class retains the dangling pointer; CUPS-Delete-Class     subsequently frees the same allocation in cupsdDeletePrinter(). A client authorized to modify and delete     classes can cause scheduler-wide denial of service. The default policy requires @SYSTEM privileges.
    (CVE-2026-107886)

  - OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference in cupsdCheckJobs() when a job marked     job-held-on-create refers to a temporary printer that has been automatically deleted. Temporary-printer     cleanup can remove the destination without canceling its held jobs, and the scheduler dereferences the     NULL result of cupsdFindDest() while checking holding_new_jobs. This terminates cupsd and interrupts all     queues managed by that process. In some plausible scenarios, an unprivileged submission can trigger this.
    (CVE-2026-107888)

  - OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in     job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job()     converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently     calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted     Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an     accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when     permitted by listener and access-control configuration. (CVE-2026-107890)

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

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1791870722 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

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

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1791870722 advisory.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

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.

  - OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout     handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever     any client connection has an in-flight Send-Document operation, without matching that connection to the     job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request     containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete     jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs     is exhausted and further legitimate print submissions are rejected. The suppression ends when the held     connection closes. (CVE-2026-107885)

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

ID	Name	Product	Family	Type	Severity
368051	CentOS Linux 8 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc (CENTOS-STREAM8:CLSA-2026:1791832189)	Nessus	CentOS Local Security Checks	Local	medium
367915	CentOS Linux 6 [TuxCare] Security Update: cups / cups-devel / cups-libs / cups-lpd / cups-php Multiple Vulnerabilities (CENTOS6:CLSA-2026:1791920953)	Nessus	CentOS Local Security Checks	Local	medium
367178	CentOS Linux 7 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1792072476)	Nessus	CentOS Local Security Checks	Local	medium
476101	Echo: cups: security update to 2.4.20-1	Tenable Cloud Security	Echo Local Security Checks	Local	medium
476101	Echo: cups: security update to 2.4.20-1	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
365366	CentOS Linux 8.4 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc (CENTOS8.4:CLSA-2026:1791916787)	Nessus	CentOS Local Security Checks	Local	medium
365359	CentOS Linux 8.5 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc (CENTOS8.5:CLSA-2026:1791916765)	Nessus	CentOS Local Security Checks	Local	medium
365356	AlmaLinux 9.2 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1791915424)	Nessus	Alma Linux Local Security Checks	Local	medium
365300	Rocky Linux 9.6 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc (ALMALINUX9.6:CLSA-2026:1791870722)	Nessus	Rocky Linux Local Security Checks	Local	medium
365298	AlmaLinux 9.6 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc (ALMALINUX9.6:CLSA-2026:1791870722)	Nessus	Alma Linux Local Security Checks	Local	medium
364393	Linux Distros Unpatched Vulnerability : CVE-2026-107885	Nessus	Misc.	Local	medium

Detections

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CVE-2026-107885

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