Insufficient Technical Documentation in Apache Tomcat - CVE-2026-59084

Vulnerability identifier: #VU137407

CSH Severity: Low

CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-59084

CWE-ID: CWE-1059

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to bypass encryption protections.

The vulnerability exists due to improper documentation in EncryptInterceptor configuration when deploying the feature. A remote user can leverage an insecure configuration to bypass encryption protections.

Apache Tomcat
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - AUS
Web and Scripting Module
openSUSE Leap
openEuler
Db2 Developer Extension
Integration Bus for z/OS
IBM Watson Discovery for IBM Cloud Pak for Data
Datastax Enterprise with IBM
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
tomcat-help
tomcat
tomcat-jsvc
tomcat (Red Hat package)
tomcat9 (Red Hat package)
tomcat-docs-webapp
tomcat-admin-webapps
tomcat-javadoc
tomcat-jsp-2_3-api
tomcat-el-3_0-api
tomcat-servlet-4_0-api
tomcat-lib
tomcat-webapps
tomcat10-jsp-3_1-api
tomcat10-webapps
tomcat10-servlet-6_0-api
tomcat10
tomcat10-lib
tomcat10-el-5_0-api
tomcat10-admin-webapps
tomcat11-doc
tomcat11-docs-webapp
tomcat11-jsvc
tomcat11-embed
tomcat11-lib
tomcat11-admin-webapps
tomcat11-servlet-6_1-api
tomcat11-jsp-4_0-api
tomcat11-webapps
tomcat11-el-6_0-api
tomcat11

Install security update from vendor's website.

Apache Tomcat - addressed in versions 9.0.120, 10.1.57, 11.0.24
Db2 Developer Extension - update to 1.2.0
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.4.2
Integration Bus for z/OS - update to 10.1.0.7 PH72347
Datastax Enterprise with IBM - update to 6.9.25
tomcat-help - update to 9.0.120-1
tomcat - update to 9.0.120-1
tomcat-jsvc - update to 9.0.120-1
tomcat (Red Hat package) - addressed in versions 9.0.120-1.el8_8, 9.0.120-1.el9_2, 9.0.120-1.el9_4, 9.0.120-2.el9_8
tomcat9 (Red Hat package) - update to 9.0.120-1.el10_2
tomcat-docs-webapp - update to 9.0.120-3.174.1
tomcat - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat-admin-webapps - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat-javadoc - update to 9.0.120-3.174.1
tomcat-jsp-2_3-api - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat-el-3_0-api - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat-servlet-4_0-api - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat-lib - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat-webapps - addressed in versions 9.0.120-3.174.1, 9.0.120-150200.114.1
tomcat10-jsp-3_1-api - update to 10.1.57-150200.5.73.1
tomcat10-webapps - update to 10.1.57-150200.5.73.1
tomcat10-servlet-6_0-api - update to 10.1.57-150200.5.73.1
tomcat10 - update to 10.1.57-150200.5.73.1
tomcat10-lib - update to 10.1.57-150200.5.73.1
tomcat10-el-5_0-api - update to 10.1.57-150200.5.73.1
tomcat10-admin-webapps - update to 10.1.57-150200.5.73.1
tomcat11-doc - update to 11.0.24-150600.13.27.1
tomcat11-docs-webapp - update to 11.0.24-150600.13.27.1
tomcat11-jsvc - update to 11.0.24-150600.13.27.1
tomcat11-embed - update to 11.0.24-150600.13.27.1
tomcat11-lib - update to 11.0.24-150600.13.27.1
tomcat11-admin-webapps - update to 11.0.24-150600.13.27.1
tomcat11-servlet-6_1-api - update to 11.0.24-150600.13.27.1
tomcat11-jsp-4_0-api - update to 11.0.24-150600.13.27.1
tomcat11-webapps - update to 11.0.24-150600.13.27.1
tomcat11-el-6_0-api - update to 11.0.24-150600.13.27.1
tomcat11 - update to 11.0.24-150600.13.27.1

• https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.57
• https://github.com/apache/tomcat/commit/79466463f18cf57704513a5aaa93961bf14c9ef5
• https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.24
• https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.120

• Two vulnerabilities in Apache Tomcat
• openEuler update for tomcat
• SUSE update for tomcat10
• SUSE update for tomcat
• SUSE update for tomcat11
• Multiple vulnerabilities in IBM Integration Bus for z/OS
• SUSE update for tomcat
• Multiple vulnerabilities in IBM DataStax Enterprise
• Multiple vulnerabilities in IBM Db2 Developer Extension
• Red Hat Enterprise Linux 10 update for tomcat9
• Red Hat Enterprise Linux 9 update for tomcat
• Red Hat Enterprise Linux 9 update for tomcat
• Red Hat Enterprise Linux 9 update for tomcat
• Red Hat Enterprise Linux 8 update for tomcat
• Multiple vulnerabilities in IBM Watson Discovery Cartridge