What’s Vulnerable › Vulnerabilities
CVE-2026-76956
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-20 · updated 2026-09-08
- Weakness: CWE-394
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 products
- libexpat project libexpat: from 2.8.2 before 2.8.4 — fixed in 2.8.4
How to fix
Upgrade to a fixed version: libexpat project libexpat 2.8.4. Check the vendor advisory for mitigations.
References
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