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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: 0.0025 (0.162)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-394⁠

Unexpected Status Code or Return Value

Impacted images

Advisories

NIST

CREATED

UPDATED

ADVISORY IDCVE-2026-76956⁠
EXPLOITABILITY SCORE

2.2

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

CVSS SCORE

5.9medium

Alpine

CREATED

UPDATED

ADVISORY IDCVE-2026-76956⁠
EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY

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

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

N/Amedium