VULNERABILITY INTELLIGENCE

CVE-2026-76956

CVSS score7.5 HIGH
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-08-20
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-394: Unexpected Status Code or Return Value

Primary references