CVE-2026-76956

Published: Aug 20, 2026Modified: Sep 8, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.

Affected (1)

Products: Libexpat Project: Libexpat

Libexpat Project

1 product

Libexpat

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Libexpat Project Libexpat	2.8.2 ≤ version < 2.8.4

Related CWEs

CWE-394

Unexpected Status Code or Return Value

The product does not properly check when a function or operation returns a value that is legitimate for the function, but is not expected by the product.

References (2)

https://github.com/libexpat/libexpat/pull/1326

Source: cve@mitre.org

Issue TrackingPatch

https://github.com/libexpat/libexpat/pull/1329

Source: cve@mitre.org

Issue TrackingPatch

Timeline

No history available yet.