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Microsoft Security Response CenterCVE-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.

Mariner

Read the vendor bulletin Get alerts for azl3 expat 2.8.2-1 on Azure Linux
7.5CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • azl3 expat 2.8.2-1 on Azure Linux 3.0
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-76956View CVSS, KEV, EPSS, and threat context
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