VULNERABILITY INTELLIGENCE

CVE-2026-56132

CVSS score6.9 MEDIUM
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-06-19
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Description

In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.

Weakness classification

  • cve@mitre.org: CWE-821

Primary references