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CVE-2026-76956

ADVISORY - nist

Summary

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.

EPSS Score⁠: 0.00287 (0.196)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-394⁠

Unexpected Status Code or Return Value

Impacted images

Advisories

Alpine

CREATED

UPDATED

ADVISORY IDCVE-2026-76956⁠
EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY
PackageTypeOS NameOS VersionAffected RangesFix Versions
alpine/expatapkalpine3.24<2.8.4-r02.8.4-r0
alpine/expatapkalpine3.22<2.8.4-r02.8.4-r0
alpine/expatapkalpine3.23<2.8.4-r02.8.4-r0
alpine/expatapkalpineedge<2.8.4-r02.8.4-r0

Severity and metrics

No CVSS data available from this advisory.

NIST

CREATED

UPDATED

ADVISORY IDCVE-2026-76956⁠
EXPLOITABILITY SCORE

2.2

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)
CWE-394⁠

CVSS SCORE

5.9medium

Debian

CREATED

UPDATED

ADVISORY IDCVE-2026-76956⁠
EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

N/Alow

Ubuntu

CREATED

UPDATED

ADVISORY IDCVE-2026-76956⁠
EXPLOITABILITY SCORE

3.9

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

7.5medium