High · published October 1, 2026
Missing authentication checks 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 a denial of service (forced re-authentication) via forged Authorization headers when Digest authentication is enabled with AuthDigestNcCheck .
Users are recommended to upgrade to version 2.4.69, which fixes this issue.
| Product | Versions | Fixed in |
|---|---|---|
| apache/http_server | ≥ 2.4.0, < 2.4.69 | 2.4.69 |