CVE-2026-59083

CRITICAL CVSS 9.1 View on NVD ↗

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Products

apache/tomcat

References

https://lists.apache.org/thread/3g63zos2gkjo5vgnrk8kxmosv47w6wbq
http://www.openwall.com/lists/oss-security/2026/07/14/7

Published: Jul 14, 2026 09:16 UTC Modified: Jul 14, 2026 16:57 UTC