Dashboard / CVE-2026-56131

CVE-2026-56131

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 35/100
Published: 2026-06-19 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

No Auth No Interaction

CVSS Vector Breakdown

AV: Local
AC: High
PR: None
UI: None
S: Unchanged
C: Low
I: Low
A: Low

Description

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).

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
libexpat_project libexpat < 2.8.2

References & Advisories (1)

Bug Bounty Relevance

35 / 100
✓ No authentication
✓ No user interaction

CVSS Score

4.9 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploitation Probability

0.18%
Raw Score 0.001750
Percentile 7.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00175
2026-10-28
0.00175

Intelligence Sources

nvd ref →

External Links