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.
| Vendor | Product | Versions |
|---|---|---|
| apache | tomcat | 11.0.0-M1, 10.1.0-M1, 9.0.0.M1, 8.5.0, 10.1.57, 9.0.120, 11.0.24 |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| apache | tomcat | cert_advisory | 90% |
| ibm | qradar siem | cert_advisory | 90% |
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Updated affected versions to include 10.1.57, 9.0.120, and 11.0.24, and confirmed that the patch is now available.
Updated severity to HIGH, added CVE-2026-59083, and clarified exploit availability.
Updated severity from NONE to LOW and specified the fixed version as 11.0.24.
Initial creation
