MajorCritical vulnerability
CVE-2026-73636 (CVSS 8.1)
NVD · officialPublished Oct 1, 2026Risk 37/100
Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0. Users are recommended to upgrade to version 2.4.69, which fixes this issue.
Technical details
CVSS
8.1
AV:NetworkAC:HighPR:NoneUI:NoneC:HighI:HighA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
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