CVE-2026-56132

MediumCVSS 6.9/10Last modified Jun 23, 2026

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.

Metrics

CVSS 3.1 6.9/10CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Weakness enumeration

CWE-821

Affected software

No affected versions have been published.

Timeline

Published: Jun 19, 2026
Last modified: Jun 23, 2026
NVD status: Analyzed

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