Observable Timing Discrepancy vulnerability when comparing AJP secret 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 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://lists.apache.org/thread/2k654v5cq123npfsd1b2kk1y30owqb1m 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 3.7 · apacheNVD modified 2026-10-26 18:10
Affected (CPE criteria) 1
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
References 2
- https://lists.apache.org/thread/2k654v5cq123npfsd1b2kk1y30owqb1m Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/05/12/10 Mailing List, Third Party Advisory