CVE-2026-73637 — Apache HTTP Server: mod_auth_digest DoS attack

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache HTTP Server	affected 2.4.0 through 2.4.68

CWE

CWE-416

References

https://httpd.apache.org/security/vulnerabilities_24.html

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/10/01/28