Bug 2499917 (CVE-2026-59083) - CVE-2026-59083 tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve
Summary: CVE-2026-59083 tomcat: Apache Tomcat: Security constraint bypass via improper...
Keywords:
Status: NEW
Alias: CVE-2026-59083
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2508527
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-14 09:01 UTC by OSIDB Bzimport
Modified: 2026-10-01 22:11 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:49951 0 None None None 2026-08-05 13:12:35 UTC
Red Hat Product Errata RHSA-2026:49952 0 None None None 2026-08-05 13:11:46 UTC
Red Hat Product Errata RHSA-2026:67163 0 None None None 2026-09-14 13:35:26 UTC
Red Hat Product Errata RHSA-2026:68651 0 None None None 2026-09-18 09:04:57 UTC
Red Hat Product Errata RHSA-2026:68659 0 None None None 2026-09-17 14:21:29 UTC
Red Hat Product Errata RHSA-2026:68660 0 None None None 2026-09-17 14:40:23 UTC
Red Hat Product Errata RHSA-2026:68677 0 None None None 2026-09-17 15:03:12 UTC
Red Hat Product Errata RHSA-2026:68678 0 None None None 2026-09-17 14:33:09 UTC
Red Hat Product Errata RHSA-2026:68679 0 None None None 2026-09-17 14:36:25 UTC
Red Hat Product Errata RHSA-2026:68680 0 None None None 2026-09-17 14:39:15 UTC
Red Hat Product Errata RHSA-2026:73981 0 None None None 2026-10-01 22:11:23 UTC
Red Hat Product Errata RHSA-2026:73982 0 None None None 2026-10-01 16:24:12 UTC

Description OSIDB Bzimport 2026-07-14 09:01:28 UTC 
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.
Comment 3 errata-xmlrpc 2026-08-05 13:11:45 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 7.0.1

Via RHSA-2026:49952 https://access.redhat.com/errata/RHSA-2026:49952
Comment 4 errata-xmlrpc 2026-08-05 13:12:34 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 7.0 on RHEL 10
  Red Hat JBoss Web Server 7.0 on RHEL 8
  Red Hat JBoss Web Server 7.0 on RHEL 9

Via RHSA-2026:49951 https://access.redhat.com/errata/RHSA-2026:49951
Comment 7 Jon Orris 2026-09-14 13:35:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:67163 https://access.redhat.com/errata/RHSA-2026:67163
Comment 9 Jon Orris 2026-09-17 14:21:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:68659 https://access.redhat.com/errata/RHSA-2026:68659
Comment 10 Jon Orris 2026-09-17 14:33:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:68678 https://access.redhat.com/errata/RHSA-2026:68678
Comment 11 Jon Orris 2026-09-17 14:36:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:68679 https://access.redhat.com/errata/RHSA-2026:68679
Comment 12 Jon Orris 2026-09-17 14:39:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:68680 https://access.redhat.com/errata/RHSA-2026:68680
Comment 13 Jon Orris 2026-09-17 14:40:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:68660 https://access.redhat.com/errata/RHSA-2026:68660
Comment 14 Jon Orris 2026-09-17 15:03:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:68677 https://access.redhat.com/errata/RHSA-2026:68677
Comment 15 Jon Orris 2026-09-18 09:04:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:68651 https://access.redhat.com/errata/RHSA-2026:68651
Comment 16 Jon Orris 2026-10-01 16:24:10 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 6.2.5

Via RHSA-2026:73982 https://access.redhat.com/errata/RHSA-2026:73982
Comment 17 Jon Orris 2026-10-01 22:11:22 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 6.2 on RHEL 10
  Red Hat JBoss Web Server 6.2 on RHEL 8
  Red Hat JBoss Web Server 6.2 on RHEL 9

Via RHSA-2026:73981 https://access.redhat.com/errata/RHSA-2026:73981
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