CVE-2026-76956

7.5 highEPSS 0.3%

High (7.5) in libexpat project libexpat. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
CWE: CWE-394
Published: 2026-08-20
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

Affected

libexpat_project:libexpat

References

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

Check your stack JSON