This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-59083 →
DEBIAN-CVE-2026-59083
Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constraint bypass for some configurat...
Original description
The description as published by the source.
Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constraint bypass for some configurations. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.0.M1 through 9.0.119, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120, which fix the issue.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
tomcat10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13
tomcat10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
tomcat10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.1.60-1"}]}]
Debian:13
tomcat11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
tomcat11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.24-1"}]}]
Debian:12
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}]
Debian:13
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}]
Debian:14
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}]
References
- advisory security-tracker.debian.org