Fixed in Apache Tomcat 10.0.20

Note: The issue below was fixed in Apache Tomcat 10.0.19 but the release vote for the 10.0.19 release candidate did not pass. Therefore, although users must download 10.0.20 to obtain a version that includes a fix for these issues, version 10.0.19 is not included in the list of affected versions...

KLA19263 OSI vulnerability in Apache Tomcat

Information disclosure vulnerability was found in Apache Tomcat. Malicious users can exploit this vulnerability to obtain sensitive information. Original advisories Apache Tomcat 10.x vulnerabilities Apache Tomcat 9.x vulnerabilities Apache Tomcat 8.x vulnerabilities Exploitation Public exploits...

Apache Tomcat 9.0.0.M1 < 9.0.62 Spring4Shell CVE-2021-43980

The version of Apache Tomcat installed on the remote host is 9.x prior to 9.0.62. - 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...