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VulnerabilityPublished Updated

CVE-2026-13757: Red Hat Enterprise Linux 10 · Uncontrolled Recursion

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 6.2 Medium.

Data as of 10 Nov 2026, 11:37 UTC

CVSS 3.1 base score
6.2Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.2
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10p11-kitAffected–Fixed in–
Red Hat Enterprise Linux 9p11-kitAffected–Fixed in–
Cert Manager support for Red Hat OpenShift release 1.17cert-manager/jetstack-cert-manager-acmesolver-rhel9Affected–Fixed in–
Cert Manager support for Red Hat OpenShift release 1.17cert-manager/jetstack-cert-manager-rhel9Affected–Fixed in–
Cert Manager support for Red Hat OpenShift release 1.17cert-manager/cert-manager-operator-rhel9Affected–Fixed in–
Cert Manager support for Red Hat OpenShift release 1.17cert-manager/cert-manager-istio-csr-rhel9Affected–Fixed in–

AI-suggested

Red Hat has released fixed packages for p11-kit version 0.26.4-1.hum1 that address CVE-2026-13757. Users should apply these updates to remediate the vulnerability. Patch status is confirmed by Red Hat advisories RHSA-2026:37469 and RHSA-2026:38342. No other mitigation or workaround is indicated.

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.

References

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