Dashboard / CVE-2026-56412

CVE-2026-56412

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 47/100
Published: 2026-06-21 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
libexpat_project libexpat < 2.8.2

References & Advisories (1)

Bug Bounty Relevance

47 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploitation Probability

0.18%
Raw Score 0.001790
Percentile 7.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00179
2026-10-28
0.00179

Intelligence Sources

nvd ref →

External Links