CVE-2026-56132

medium

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.

References

https://github.com/libexpat/libexpat/pull/1272

Details

Source: Mitre, NVD

Published: 2026-06-19

Updated: 2026-06-19

Risk Information

CVSS v2

Base Score: 5.9

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:P

Severity: Medium

CVSS v3

Base Score: 6.9

Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L