CVE-2026-43514: Apache Tomcat - AJP secret compared in non-constant time
(updated )
Versions Affected: Apache Tomcat 11.0.0-M1 to 11.0.21 Apache Tomcat 10.1.0-M1 to 10.1.54 Apache Tomcat 9.0.0.M1 to 9.0.117 Older, unsupported versions may also be affected
Description: The AJP secret was compared in non-constant time allowing an attacker on the local network to mount a timing attack to determine the AJP secret.
Mitigation: Users of the affected versions should apply one of the following mitigations:
- Upgrade to Apache Tomcat 11.0.22 or later
- Upgrade to Apache Tomcat 10.1.55 or later
- Upgrade to Apache Tomcat 9.0.118 or later
References
- github.com/advisories/GHSA-9m89-8frq-c98c
- github.com/apache/tomcat/commit/933dcdbf2515972280002929e7e597dead2e9ffa
- github.com/apache/tomcat/commit/a102a2a157868ca51d83eaf5a119ccd9976a113e
- github.com/apache/tomcat/commit/d35d9d23263c8e4af561f615c960c91697ff200e
- lists.apache.org/thread/2k654v5cq123npfsd1b2kk1y30owqb1m
- nvd.nist.gov/vuln/detail/CVE-2026-43514
- tomcat.apache.org/security-10.html
- tomcat.apache.org/security-11.html
- tomcat.apache.org/security-9.html
Code Behaviors & Features
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