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NVD / CVE Program· CNA redhat

CVE-2026-13757: P11-kit: stack exhaustion via unbounded recursion in rpc attribute parsing

Noroxi assessment

Priority: Monitor (action score 24/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 p11-kit 0.25.0-1 on Azure Linux 3.0 0.26.5-1.

Low priority for now. Upgrade to azl3 p11-kit 0.25.0-1 on Azure Linux 3.0 0.26.5-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 6.2 · v3.1—No exploit Fix available
Published
Jun 29, 2026
Updated
Nov 6, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
6.2
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-13757

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhathardened images
redhatopenshift container platform
redhatenterprise linux
p11-kit projectp11-kit

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • p11-kit project p11-kitall versions
  • redhat enterprise linux10.0
  • redhat enterprise linux6.0
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0
  • redhat enterprise linux9.0
  • redhat hardened imagesall versions
  • redhat openshift container platform4.0 and later · up to 4.22.1 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.17

    • 1791371080 and laternot affected · rpm
    • 1791371069 and laternot affected · rpm
    • 1791788287 and laternot affected · rpm
    • 1791378395 and laternot affected · rpm
    • 1791970484 and laternot affected · rpm

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.18

    • 1791459707 and laternot affected · rpm
    • 1791459711 and laternot affected · rpm
    • 1791459759 and laternot affected · rpm
    • 1789029076 and laternot affected · rpm
    • 1791966259 and laternot affected · rpm

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.20

    • 1790223279 and laternot affected · rpm
    • 1790223719 and laternot affected · rpm
    • 1790272426 and laternot affected · rpm
    • 1790589998 and laternot affected · rpm
    • 1790589912 and laternot affected · rpm
    • 1790589914 and laternot affected · rpm
    • 1790589855 and laternot affected · rpm
    • 1790598593 and laternot affected · rpm

  • Red Hat Cost Management 4

    • 1790844333 and laternot affected · rpm

  • Red Hat Red Hat Discovery 2

    • 1786638573 and laternot affected · rpm
    • 1786634825 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • 0:0.26.4-1.el10_2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • 0:0.26.4-1.el9_8 and laternot affected · rpm
    • 0:0.26.4-1.el9_8 and laternot affected · rpm

  • Red Hat Red Hat Hardened Images

    • 0.26.2-1.2.hum1 and laternot affected · rpm
    • 0.26.4-1.hum1 and laternot affected · rpm

  • Red Hat Red Hat Insights proxy 1.5

    • 1786433656 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10p11-kitbefore 0.26.4-1.el10_20.26.4-1.el10_2
AlmaLinux:10p11-kit-clientbefore 0.26.4-1.el10_20.26.4-1.el10_2
AlmaLinux:10p11-kit-develbefore 0.26.4-1.el10_20.26.4-1.el10_2
AlmaLinux:10p11-kit-serverbefore 0.26.4-1.el10_20.26.4-1.el10_2
AlmaLinux:10p11-kit-trustbefore 0.26.4-1.el10_20.26.4-1.el10_2
AlmaLinux:9p11-kitbefore 0.26.4-1.el9_80.26.4-1.el9_8
AlmaLinux:9p11-kit-clientbefore 0.26.4-1.el9_80.26.4-1.el9_8
AlmaLinux:9p11-kit-develbefore 0.26.4-1.el9_80.26.4-1.el9_8
AlmaLinux:9p11-kit-serverbefore 0.26.4-1.el9_80.26.4-1.el9_8
AlmaLinux:9p11-kit-trustbefore 0.26.4-1.el9_80.26.4-1.el9_8
Debian:12p11-kitfrom 0—
Debian:14p11-kitbefore 0.26.4-10.26.4-1
openSUSE:Leap 16.0p11-kitbefore 0.25.5-160000.3.10.25.5-160000.3.1
openSUSE:Tumbleweedp11-kitbefore 0.26.5-1.10.26.5-1.1
Red Hat:enterprise_linux:10.2p11-kitbefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-clientbefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-client-debuginfobefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-debuginfobefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-debugsourcebefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-develbefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-serverbefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-server-debuginfobefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-trustbefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2
Red Hat:enterprise_linux:10.2p11-kit-trust-debuginfobefore 0:0.26.4-1.el10_20:0.26.4-1.el10_2

+27

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-71226Libkcapi: memory corruption via uncanceled aio requests on error in libkcapi's one-shot aio path
    29Monitor
  • CVE-2026-71225Libkcapi: iv reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries
    26Monitor
  • CVE-2026-0990Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing
    23Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-2625Apr 3, 2026 · Rust-rpm-sequoia: rust-rpm-sequoia: denial of service via crafted rpm file during signature verification
    22Monitor
  • ← EarlierCVE-2026-13595Jun 29, 2026 · Util-linux: util-linux: heap use-after-free in libblkid nested partition probing
    21Monitor
  • Later →CVE-2026-71227Aug 5, 2026 · Libkcapi: infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled io_getevents() timeout return
    20Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 p11-kit 0.25.0-1 on Azure Linux 3.00.26.5-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:p11-kit0.26.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:p11-kit-client0.26.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:p11-kit-devel0.26.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:p11-kit-server0.26.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:p11-kit-trust0.26.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
debian:p11-kit0.26.4-1 · Debian:14Package registry (OSV)
opensuse:p11-kit0.26.5-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:mingw32-p11-kit0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:mingw64-p11-kit0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit-client0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit-client0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::baseosPackage registry (OSV)
red hat:p11-kit-client-debuginfo0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:p11-kit-debuginfo0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:p11-kit-debugsource0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:p11-kit-devel0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit-devel0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:p11-kit-server0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit-server0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:p11-kit-server-debuginfo0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:p11-kit-trust0:0.26.2-1.2.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit-trust0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::baseosPackage registry (OSV)
red hat:p11-kit-trust-debuginfo0:0.26.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:p11-kit0:0.26.4-1.el9_8 · Rocky Linux:9Package registry (OSV)
suse:p11-kit0.25.5-160000.3.1 · SUSE:Linux Micro 6.2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-0990165 days apartLibxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing
    23Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-674 · Uncontrolled Recursion

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records