CVE-2026-56131

ADVISORY - debian

Summary

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).

expat 2.8.2-1 (bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1140387) https://github.com/libexpat/libexpat/pull/1267

EPSS Score⁠: 0.00102 (0.012)

Common Weakness Enumeration (CWE)

Impacted images

Advisories

Alpine

CREATED

4 days ago

UPDATED

1 day ago

ADVISORY IDCVE-2026-56131⁠

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Debian

CREATED

11 days ago

UPDATED

3 days ago

ADVISORY IDCVE-2026-56131⁠

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Ubuntu

CREATED

8 days ago

UPDATED

6 days ago

ADVISORY IDCVE-2026-56131⁠

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

N/Amedium

Chainguard

CREATED

5 days ago

UPDATED

5 days ago

ADVISORY ID

CGA-9983-7642-5rjm

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY