CVE-2026-76956

State: Published
Severity: 5.9 Medium
Published: Aug 20, 2026
Updated: Aug 20, 2026
Reserved: Aug 20, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	mitre

Weaknesses

CWE-394 Unexpected Status Code or Return Value

Affected Products

Product	Versions
libexpatlibexpat project	2.8.2 to before 2.8.4Affected

References

https://github.com/libexpat/libexpat/pull/1326
https://github.com/libexpat/libexpat/pull/1329

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