CVE-2026-73637CWE-416

CVE-2026-73637

High · published October 1, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
40.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00484 · 40.7th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-01T21:17Z
Affected products (1)
ProductVersionsFixed in
apache/http_server≥ 2.4.0, < 2.4.692.4.69
References (2)
https://httpd.apache.org/security/vulnerabilities_24.html · [email protected]http://www.openwall.com/lists/oss-security/2026/10/01/28 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 03 OCT 03:46Z
    EPSS moved — → 0%
    epss
  • 01 OCT 16:18Z
    Apache HTTP Server: mod_auth_digest DoS attack
    cvelistv5