No exploitation reportedFix available

CVE-2026-13757

No exploitation reported by the sources we read.

Published2026-06-29
WeaknessCWE-674

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2026-06-2919:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-13757?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-13757?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Redhat enterprise linux

Branch	Affected	Fixed in	Source
6.0	= 6.0	no fix published	NVD
7.0	= 7.0	no fix published	NVD
8.0	= 8.0	no fix published	NVD
9.0	= 9.0	no fix published	NVD
10.0	= 10.0	no fix published	NVD

P11-kit project p11-kit

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Redhat hardened images

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

p11-kitAlmaLinux:10all versions · fixed in 0.26.4-1.el10_2and 4 other packages
p11-kitAlmaLinux:9all versions · fixed in 0.26.4-1.el9_8and 4 other packages

Vendor advisories

CVE-2026-13757 Red Hat Product Security249 products fixed · 14 known affected
p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing
p11-kit-devel as a component of Red Hat Enterprise Linux 6 · p11-kit-trust as a component of Red Hat Enterprise Linux 6 · p11-kit.src as a component of Red Hat Enterprise Linux 6 · +11 more
RHSA-2026:82888 Red Hat Product Security1 product fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
RHSA-2026:82857 Red Hat Product Security1 product fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
RHSA-2026:82372 Red Hat Product Security4 products fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
RHSA-2026:82354 Red Hat Product Security4 products fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
RHSA-2026:82347 Red Hat Product Security8 products fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2

19 more advisories

Full record on NVD

Fix

Vendor fix Red Hat Product Security RHSA-2026:82888 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. The steps to apply the upgraded images are different depending on the installation plan approval policy you used when installing the cert-manager Operator for Red Hat OpenShift. - If t…
Vendor fix Red Hat Product Security RHSA-2026:81201 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://docs.openshift.com/container-platform/latest/operators/admin/olm-upgrading-operators.html
Vendor fix Red Hat Product Security RHSA-2026:58981 · 3 productsPlease consult the RHUI Technology Preview Release Notes at https://access.redhat.com/articles/7141172 for instructions on how to use this image set.
Vendor fix Red Hat Product Security RHSA-2026:54760 · 4 productsThe containers required to run Discovery can be installed through discovery-installer RPM. See the official documentation for more details.
Vendor fix Red Hat Product Security RHSA-2026:54387 · 5 productsThe container images provided by this release, apart from the installer, should be deployed using rhui-installer utility. See the official documentation for more details.
Vendor fix Red Hat Product Security RHSA-2026:53371 · 2 productsThe Insights proxy container image provided here is downloaded by the Red Hat Insights proxy product RPM. Before applying this update, make sure all previously released errata relevant to your system have been applied.

Advisories and patches

access.redhat.comVendor Advisory
bugzilla.redhat.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-07-01
OpenCVESSVC decisionnone—
CNACVSS 3.16.2read 2026-10-23
CNAweakness (CWE)CWE-674read 2026-10-23
FIRST EPSSEPSS score0.2 %2026-10-22
OSVaffected packages—
Microsoft MSRCadvisory—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-06-29
Last Modified: 2026-10-14
NVD status: Modified
MSRC Title: P11-kit: stack exhaustion via unbounded recursion in rpc attribute parsing

Frequently asked questions

What is CVE-2026-13757?

Is CVE-2026-13757 actively exploited?

Active exploitation of CVE-2026-13757 has not been confirmed. Its EPSS score was 0.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-13757?

CVE-2026-13757 has a CVSS v3 base score of 6.2 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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