CVE-2026-56405

Published: Jun 21, 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

libexpat before 2.8.2 has an integer overflow in getAttributeId.

Affected (1)

Products: Libexpat Project: Libexpat

Libexpat Project

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Libexpat Project Libexpat	Before 2.8.2

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (1)

https://github.com/libexpat/libexpat/pull/1251

Source: cve@mitre.org

Patch

Timeline

No history available yet.