Severity: important
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25
- Apache Tomcat 10.1.0-M1 through 10.1.59
- Apache Tomcat 9.0.0.M1 through 9.0.121
- Apache Tomcat 8.5.0 through 8.5.100
- Apache Tomcat 7.0.0 through 7.0.109
Description:
Allocation of resources without limits or throttling vulnerability in
Apache Tomcat allows an unauthenticated AJP request to pin an AJP
processing thread leading to denial of service.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from
10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through
7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122,
which fix the issue.
This issue is being tracked as lo
References:
https://lists.apache.org/thread/tyqcqk99g7ghgk22641vf67vghcyswnw
https://tomcat.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-78383
https://issues.apache.org/jira/browse/lo
