CVE-2026-33006: medium-severity vulnerability in Apache HTTP Server
Apache HTTP Server: mod_auth_digest timing attack
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.6%
from disclosure to weapon4 days
Published on NVDMay 4
1st PoC+4d
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 Serverpublic 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.
Related CVEs — Apache HTTP Server
In the same product, most dangerous first.
CVE-2021-40438CRITICALmod_proxy SSRFEPSS 100.0%KEVCVE-2021-41773HIGHPath traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49EPSS 100.0%KEVCVE-2021-42013CRITICALPath Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)EPSS 100.0%KEVCVE-2024-38475CRITICALApache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.EPSS 100.0%KEVCVE-2021-44790—Possible buffer overflow when parsing multipart content in mod_lua of Apache HTTP Server 2.4.51 and earlierEPSS 96.8%CVE-2017-9798—CVE-2017-9798EPSS 94.7%