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.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | httpd | 2026-10-12 | ALAS2-2026-3990 | Fixed |
| Amazon Linux 2023 | httpd | 2026-10-12 | ALAS2023-2026-3202 | Fixed |
| Amazon Linux 2027 Preview | httpd | 2026-10-12 | ALAS2027-2026-207 | Fixed |
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 |