CVE-2026-73636 Apache HTTP Server - Authentication Bypass

Apache Software Foundation Apache HTTP Server 2.4.x contains an authentication bypass caused by replaying captured digest authentication credentials via crafted requests triggering garbage collection in mod_auth_digest, letting man-in-the-middle attackers bypass authentication, exploit requires AuthDigestNonceLifetime set to 0.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.41% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-294

Vendor fix

Upgrade to version 2.4.69.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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