CVE-2026-73636: Apache HTTP Server

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0. Users are recommended to upgrade to version 2.4.69, which fixes this issue.

Affected products

• Apache HTTP Server: from 2.4.0, before 2.4.69 (fixed in 2.4.69)

Published 2026-10-01. Last modified 2026-10-05.