PT-2026-57992 · Apache · Apache Tomcat

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-59083

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.23 Apache Tomcat versions 10.1.0-M1 through 10.1.56 Apache Tomcat versions 9.0.0.M1 through 9.0.119 Apache Tomcat versions 8.5.0 through 8.5.100

Description Improper handling of URL encoding (Hex Encoding) in the rewrite valve allows a security constraint bypass for certain configurations.

Recommendations Upgrade versions 11.0.0-M1 through 11.0.23 to 11.0.24. Upgrade versions 10.1.0-M1 through 10.1.56 to 10.1.57. Upgrade versions 9.0.0.M1 through 9.0.119 to 9.0.120.

Fix

Weakness Enumeration

CWE-177

Related Identifiers

CVE-2026-59083

Affected Products

Apache Tomcat

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59083 · Security Note
• https://lists.apache.org/thread/3g63zos2gkjo5vgnrk8kxmosv47w6wbq · Vendor Advisory
• http://openwall.com/lists/oss-security/2026/07/14/7 · Note
• https://twitter.com/infoflowcloud/status/2076981504681357614 · Twitter Post
• https://twitter.com/CVEnew/status/2076980599064039644 · Twitter Post