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tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve

🗓️ 05 Aug 2026 13:15:14Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 13 Views

Apache Tomcat rewrite valve allows bypass of security constraints via improper URL encoding.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: IBM Integration Bus for z/OS is vulnerable to Improper Handling of URL Encoding and Insufficient Technical Documentation due to Apache Tomcat (CVE-2026-59083 & CVE-2026-59084)
29 Jul 202616:38
–ibm
attackerkb
ATTACKERKB		CVE-2026-59083
14 Jul 202608:13
–attackerkb
nessus
Tenable Nessus		Amazon Linux 2023 : tomcat9, tomcat9-admin-webapps, tomcat9-el-3.0-api (ALAS2023-2026-1945)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : tomcat10, tomcat10-admin-webapps, tomcat10-el-5.0-api (ALAS2023-2026-1946)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : tomcat, --advisory ALAS2TOMCAT9-2026-027 (ALASTOMCAT9-2026-027)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		openSUSE 16: tomcat / tomcat-admin-webapps / tomcat-el-3_0-api / tomcat-embed / etc (openSUSE-SU-2026:21486-1)
1 Aug 202600:00
–nessus
nessus
Tenable Nessus		openSUSE 16: tomcat10 / tomcat10-admin-webapps / tomcat10-el-5_0-api / etc (openSUSE-SU-2026:21487-1)
1 Aug 202600:00
–nessus
nessus
Tenable Nessus		openSUSE 16: tomcat11 / tomcat11-admin-webapps / tomcat11-el-6_0-api / etc (openSUSE-SU-2026:21490-1)
1 Aug 202600:00
–nessus
nessus
Tenable Nessus		RHEL 10 / 8 / 9 : Red Hat JBoss Web Server 7.0.1 (RHSA-2026:49951)
5 Aug 202600:00
–nessus
nessus
Tenable Nessus		SUSE SLES15: tomcat10 / tomcat10-admin-webapps / tomcat10-el-5_0-api / etc (SUSE-SU-2026:3418-1)
31 Jul 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8noarchjws7-tomcat11.0.21-6.redhat_00005.1.el8jwsjws7-tomcat-11.0.21-6.redhat_00005.1.el8jws.noarch.rpm
Red Hat Enterprise Linux9noarchjws7-tomcat11.0.21-6.redhat_00005.1.el9jwsjws7-tomcat-11.0.21-6.redhat_00005.1.el9jws.noarch.rpm
Red Hat Enterprise Linux10noarchjws7-tomcat11.0.21-6.redhat_00005.1.el10jwsjws7-tomcat-11.0.21-6.redhat_00005.1.el10jws.noarch.rpm
Red Hat Enterprise Linux8noarchjws7-tomcat-admin-webapps11.0.21-6.redhat_00005.1.el8jwsjws7-tomcat-admin-webapps-11.0.21-6.redhat_00005.1.el8jws.noarch.rpm
Red Hat Enterprise Linux9noarchjws7-tomcat-admin-webapps11.0.21-6.redhat_00005.1.el9jwsjws7-tomcat-admin-webapps-11.0.21-6.redhat_00005.1.el9jws.noarch.rpm
Red Hat Enterprise Linux10noarchjws7-tomcat-admin-webapps11.0.21-6.redhat_00005.1.el10jwsjws7-tomcat-admin-webapps-11.0.21-6.redhat_00005.1.el10jws.noarch.rpm
Red Hat Enterprise Linux8noarchjws7-tomcat-docs-webapp11.0.21-6.redhat_00005.1.el8jwsjws7-tomcat-docs-webapp-11.0.21-6.redhat_00005.1.el8jws.noarch.rpm
Red Hat Enterprise Linux9noarchjws7-tomcat-docs-webapp11.0.21-6.redhat_00005.1.el9jwsjws7-tomcat-docs-webapp-11.0.21-6.redhat_00005.1.el9jws.noarch.rpm
Red Hat Enterprise Linux10noarchjws7-tomcat-docs-webapp11.0.21-6.redhat_00005.1.el10jwsjws7-tomcat-docs-webapp-11.0.21-6.redhat_00005.1.el10jws.noarch.rpm
Red Hat Enterprise Linux8noarchjws7-tomcat-el-5.0-api11.0.21-6.redhat_00005.1.el8jwsjws7-tomcat-el-5.0-api-11.0.21-6.redhat_00005.1.el8jws.noarch.rpm
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06 Aug 2026 15:36Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.19.1
EPSS0.0037
SSVC
CWE-807
apache tomcatrewrite valveurl encodingsecurity constraintsvulnerabilityunauthorized access
13