CVE-2026-73637

Public on 2026-10-01
Modified on 2026-10-03
Description
Use after free in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause authentication state corruption via concurrent Digest authentication requests when AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is set to 0.

Users are recommended to upgrade to version 2.4.69, which fixes this issue.
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
5.6
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core httpd Pending Fix
Amazon Linux 2023 httpd Pending Fix
Amazon Linux 2027 Preview httpd Pending Fix

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L