Insufficient Entropy Affecting expat package, versions <0:2.8.3-0.1.1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.29% (20th percentile)

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  • Snyk IDSNYK-RHEL10-EXPAT-19274605
  • published27 Aug 2026
  • disclosed20 Aug 2026

Introduced: 20 Aug 2026

CVE-2026-76956  (opens in a new tab)
CWE-331  (opens in a new tab)

How to fix?

Upgrade RHEL:10 expat to version 0:2.8.3-0.1.1.hum1 or higher.
This issue was patched in RHSA-2026:60451.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1