CVE-2026-33006

Apache HTTP Server: mod_auth_digest timing attack

CVSS 4.8 MEDIUMEPSS 0.6%CWE-208

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker. Users are recommended to upgrade to version 2.4.67, which fixes this issue.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

Apache Software Foundation · Apache HTTP Server

public PoCs found — 1

githubgithub.com/SimoesCTT/CTT-enhanced-Apache-mod_auth_digest-timing-attack-exploit★ 0

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://httpd.apache.org/security/vulnerabilities_24.html http://www.openwall.com/lists/oss-security/2026/05/04/21