CVE-2026-56132

Published: Jun 19, 2026Modified: Jun 23, 2026

6.9

Vector

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

Exploitability: 1.4 / Impact: 5.5

Source: NVD

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.

Affected (1)

Products: Libexpat Project: Libexpat

Libexpat Project

1 product

Libexpat

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Libexpat Project Libexpat	Before 2.8.2

Related CWEs

CWE-821

Incorrect Synchronization

The product utilizes a shared resource in a concurrent manner, but it does not correctly synchronize access to the resource.

References (1)

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

Source: cve@mitre.org

Patch

Timeline

No history available yet.