Severity: important
Affected versions:
- Apache Tomcat 11.0.22 through 11.0.26
- Apache Tomcat 10.1.55 through 10.1.60
- Apache Tomcat 9.0.118 through 9.0.122
Description:
Incorrect object recycling and re-use vulnerability in Apache Tomcat
affecting HTTP/2 processing of asynchronous servlets can trigger request
and/or response mix-up between users.
This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from
10.1.55 through 10.1.60, from 9.0.118 through 9.0.122.
Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123,
which fixes the issue.
References:
https://lists.apache.org/thread.html/d1xjt7bbjqw7y7n5mcb4fm815hpfgc27
https://tomcat.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-101356
