A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes. An unauthenticated attacker with local access to the p11-kit RPC Unix domain socket can send a specially crafted request with deeply nested template attributes, causing stack exhaustion and crashing the p11-kit server process and its dependent services.

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1590:02 advisory.

    * p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing (CVE-2026-13757)

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 Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-49667 advisory.

    [0.26.2-1]
    - Rebase to 0.26.2       Resolves: RHEL-147825

    [0.26.1-1]
    - Rebase to 0.26.1       Resolves: RHEL-139075, RHEL-118361, RHEL-126132

    [0.25.10-1]
    - Update to new upstream release 0.25.10       Resolves: RHEL-115453

    [0.25.3-3]
    - Fix regression in trust where file creation fails for long cert labels       Resolves: RHEL-58899
    - Fix usage message in p11-kit list-tokens command       Resolves: RHEL-31810

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 RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:49668 advisory.

    * p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing (CVE-2026-13757)

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 packages installed that are affected by a vulnerability as referenced in the RLSA-2026:49667 advisory.

    * p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing (CVE-2026-13757)

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 Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:49667 advisory.

    The p11-kit packages provide a mechanism to manage PKCS#11 modules. The p11-kit-trust subpackage includes     a PKCS#11 trust module that provides certificate anchors and black lists based on configuration files.

    Security Fix(es):

    * p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing (CVE-2026-13757)

    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 Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-49668 advisory.

    [0.26.4-1]
    - Rebase to 0.26.4

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 Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:49668 advisory.

    The p11-kit packages provide a mechanism to manage PKCS#11 modules. The p11-kit-trust subpackage includes     a PKCS#11 trust module that provides certificate anchors and black lists based on configuration files.

    Security Fix(es):

    * p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing (CVE-2026-13757)

    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 Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-566791181a advisory.

    - server: fixed stack exhaustion via unbounded recursion in RPC attribute parsing by enforcing a recursion     depth limit (CVE-2026-13757)
    - fixed confusing error message when trying to store an existing cert with trust anchor
    - fixed assert when parsing p11-kit files with value ()
    - fixed numerous memory management issues
    - Build and test fixes
    - Updated translations

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 Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-695fd36daa advisory.

    - server: fixed stack exhaustion via unbounded recursion in RPC attribute parsing by enforcing a recursion     depth limit (CVE-2026-13757)
    - fixed confusing error message when trying to store an existing cert with trust anchor
    - fixed assert when parsing p11-kit files with value ()
    - fixed numerous memory management issues
    - Build and test fixes
    - Updated translations

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 version of p11-kit installed on the remote host is prior to 0.26.4. It is, therefore, affected by a vulnerability as referenced in the SSA:2026-191-01 advisory.

    New p11-kit packages are available for Slackware 15.0 and -current to fix a security issue.

Tenable has extracted the preceding description block directly from the p11-kit 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.

  - A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute()     and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion     depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE     attributes. An unauthenticated attacker with local access to the p11-kit RPC Unix domain socket can send a     specially crafted request with deeply nested template attributes, causing stack exhaustion and crashing     the p11-kit server process and its dependent services. (CVE-2026-13757)

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

ID	Name	Product	Family	Type	Severity
338309	MiracleLinux 9 : p11-kit-0.26.4-1.el9_8 (AXSA:2026-1590:02)	Nessus	Miracle Linux Local Security Checks	Local	medium
332245	Oracle Linux 9 : p11-kit (ELSA-2026-49667)	Nessus	Oracle Linux Local Security Checks	Local	medium
331942	RockyLinux 10 : p11-kit (RLSA-2026:49668)	Nessus	Rocky Linux Local Security Checks	Local	medium
331925	RockyLinux 9 : p11-kit (RLSA-2026:49667)	Nessus	Rocky Linux Local Security Checks	Local	medium
331807	RHEL 9 : p11-kit (RHSA-2026:49667)	Nessus	Red Hat Local Security Checks	Local	medium
331722	Oracle Linux 10 : p11-kit (ELSA-2026-49668)	Nessus	Oracle Linux Local Security Checks	Local	medium
331684	RHEL 10 : p11-kit (RHSA-2026:49668)	Nessus	Red Hat Local Security Checks	Local	medium
330004	Fedora 43 : p11-kit (2026-566791181a)	Nessus	Fedora Local Security Checks	Local	medium
326400	Fedora 44 : p11-kit (2026-695fd36daa)	Nessus	Fedora Local Security Checks	Local	medium
326346	Slackware Linux 15.0 / current p11-kit Vulnerability (SSA:2026-191-01)	Nessus	Slackware Local Security Checks	Local	medium
323786	Linux Distros Unpatched Vulnerability : CVE-2026-13757	Nessus	Misc.	Local	medium

Detections

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CVE-2026-13757

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