Apache Software Foundation Apache Tomcat vulnerabilities

CVE-2026-24733 [LOW] CWE-20 CVE-2026-24733: Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests t Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET requests by sending a (specification invalid) HEAD request using HTTP/0.9. This issue affects Apa

CVE-2026-43514 [LOW] CWE-208 CVE-2026-43514: Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue 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

CVE-2021-43980 [LOW] CWE-362 CVE-2021-43980: The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported t The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Proc