imPC@ndo IT

Tracker / CVE-2026-59083

CVE-2026-59083

Critical 9.1

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.

Affected products and versions

apache tomcat · … → 8.0.0
apache tomcat · 10.1.0 → 10.1.56
apache tomcat · 11.0.0 → 11.0.23
apache tomcat · 8.5.0 → 8.5.100
apache tomcat · 9.0.0 → 9.0.119

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References