CVE-2026-59083

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

14/07/2026

Last modified:

14/07/2026

Description

Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat&#39;s rewrite valve allowed security constraint bypass for some configurations.<br /> <br /> 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.<br /> <br /> Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120, which fix the issue.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

9.10

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:apache:tomcat::::::::		8.0.0 (including)
cpe:2.3:a:apache:tomcat::::::::	8.5.0 (including)	8.5.100 (including)
cpe:2.3:a:apache:tomcat::::::::	9.0.0 (including)	9.0.119 (including)
cpe:2.3:a:apache:tomcat::::::::	10.1.0 (including)	10.1.56 (including)
cpe:2.3:a:apache:tomcat::::::::	11.0.0 (including)	11.0.23 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-59083

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools