Red Hat Security Advisory: tomcat security, bug fix, and enhancement update
Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. Security Fix(es): * Apache Tomcat: Apache Tomcat: Information disclosure via Padding Oracle vulnerability in EncryptInterceptor (CVE-2026-29146) * Apache Tomcat: Apache Tomcat: Missing Encryption of Sensitive Data due to EncryptInterceptor bypass (CVE-2026-34486) Bug Fix(es) and Enhancement(s): * Remove tomcat clustering JAR from RPM builds (JIRA:RHEL-183992) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This advisory covers two security vulnerabilities in Apache Tomcat related to the EncryptInterceptor component. CVE-2026-29146 is an information disclosure vulnerability caused by a Padding Oracle attack vector, while CVE-2026-34486 involves missing encryption of sensitive data due to a bypass of the EncryptInterceptor. These vulnerabilities could potentially expose sensitive information. The advisory also includes bug fixes and enhancements, notably the removal of the Tomcat clustering JAR from RPM builds. The affected product is Red Hat Enterprise Linux 9 with Tomcat version 9.0.117-2.el9_8.noarch. Red Hat has released updated packages to address these issues.
Potential Impact
The vulnerabilities could lead to unauthorized disclosure of sensitive information through cryptographic weaknesses in the EncryptInterceptor component of Apache Tomcat. This may compromise confidentiality of data processed by the affected Tomcat instances. The advisory rates the security impact as important (high severity). There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated Tomcat packages (version 9.0.117-2.el9_8) for Red Hat Enterprise Linux 9 that address these vulnerabilities. Users should apply these updates promptly to remediate the issues. Detailed update instructions are available in the Red Hat advisory article https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified in the advisory.
Red Hat Security Advisory: tomcat security, bug fix, and enhancement update
Description
Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. Security Fix(es): * Apache Tomcat: Apache Tomcat: Information disclosure via Padding Oracle vulnerability in EncryptInterceptor (CVE-2026-29146) * Apache Tomcat: Apache Tomcat: Missing Encryption of Sensitive Data due to EncryptInterceptor bypass (CVE-2026-34486) Bug Fix(es) and Enhancement(s): * Remove tomcat clustering JAR from RPM builds (JIRA:RHEL-183992) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers two security vulnerabilities in Apache Tomcat related to the EncryptInterceptor component. CVE-2026-29146 is an information disclosure vulnerability caused by a Padding Oracle attack vector, while CVE-2026-34486 involves missing encryption of sensitive data due to a bypass of the EncryptInterceptor. These vulnerabilities could potentially expose sensitive information. The advisory also includes bug fixes and enhancements, notably the removal of the Tomcat clustering JAR from RPM builds. The affected product is Red Hat Enterprise Linux 9 with Tomcat version 9.0.117-2.el9_8.noarch. Red Hat has released updated packages to address these issues.
Potential Impact
The vulnerabilities could lead to unauthorized disclosure of sensitive information through cryptographic weaknesses in the EncryptInterceptor component of Apache Tomcat. This may compromise confidentiality of data processed by the affected Tomcat instances. The advisory rates the security impact as important (high severity). There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated Tomcat packages (version 9.0.117-2.el9_8) for Red Hat Enterprise Linux 9 that address these vulnerabilities. Users should apply these updates promptly to remediate the issues. Detailed update instructions are available in the Red Hat advisory article https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:36879
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-34486"]
- Cvss Version
- null
Threat ID: 6a4f6c1068715ace4315373c
Added to database: 07/09/2026, 09:38:24 UTC
Last enriched: 08/04/2026, 15:21:57 UTC
Last updated: 08/23/2026, 22:52:09 UTC
Views: 63
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