HIGH 7.5 Microsoft
CVE-2026-76956
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.
Microsoft Security Update 2026-Aug: 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
- azl3 expat 2.8.2-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-76956
- https://nvd.nist.gov/vuln/detail/CVE-2026-76956
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-08-11 via Microsoft. Affected: azl3 expat 2.8.2-1 on Azure Linux 3.0.
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