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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/libexpat/libexpat/pull/1326	Issue Tracking Patch
https://github.com/libexpat/libexpat/pull/1329	Issue Tracking Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-20 05:16

Updated : 2026-09-08 21:08

NVD link : CVE-2026-76956

Mitre link : CVE-2026-76956

CVE.ORG link : CVE-2026-76956

JSON object : View

Products Affected

libexpat_project

libexpat

CWE

CWE-394

Unexpected Status Code or Return Value

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