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
MEDIUMPre-NVD 6.26.2—
EchelonGraph scoreHIGH confidence
Score 6.2 from GitHub Security Advisory published 2026-06-29. a secondary CVSS source baseline 6.2; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.2
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.2Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.2
- EG Score
- 6.2(high)
- EPSS
- 2.1%
- KEV
- Not listed
Published
June 29, 2026
Last Modified
July 1, 2026
Advisory Details (2)
Auto-updated Jun 29, 2026Patch available. Sources: redhat.
redhat
2494556 – (CVE-2026-13757) CVE-2026-13757 p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing
https://bugzilla.redhat.com/show_bug.cgi?id=2494556Vendor Advisories for CVE-2026-13757(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Frequently asked(5)
What is CVE-2026-13757?
CVE-2026-13757 is a medium vulnerability published on June 29, 2026. A flaw was found in p11-kit. The RPC message attribute parsing functions p11rpcmessagegetattribute() and p11rpcmessagegetattributearrayvalue() form a mutually-recursive call chain with no recursion depth limit when processing nested CKAWRAPTEMPLATE, CKAUNWRAPTEMPLATE, and CKADERIVETEMPLATE…
When was CVE-2026-13757 disclosed?
CVE-2026-13757 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13757 actively exploited?
CVE-2026-13757 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-13757?
CVE-2026-13757 has a CVSS v3 base score of 6.2 (NVD).
How do I remediate CVE-2026-13757?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13757, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-13757
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