PT-2026-39462 · Libexpat · Libexpat

Published 2026-05-10 · Updated 2026-05-10 · CVE-2026-45186

NVD

CVSS v3.1

2.9

Low

Base vector

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

In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.

Fix

Weakness Enumeration

CWE-407

Related Identifiers

CVE-2026-45186

Affected Products

Libexpat

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-45186 · Security Note
• https://github.com/libexpat/libexpat/pull/1216 · Note