DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Fix
Public exploits 1
- covepseng/cve-2026-43512-poc PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 1
- https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73 Mailing List, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · apacheNVD modified 2026-10-26 00:10
Affected (CPE criteria) 1
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
References 2
- https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73 Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/05/12/8 Mailing List, Third Party Advisory