Red Hat Security Advisory: tomcat9 security, bug fix, and enhancement update
Red Hat has issued a security advisory for tomcat9 in Red Hat Enterprise Linux 10, addressing two vulnerabilities: an information disclosure via a Padding Oracle vulnerability in EncryptInterceptor (CVE-2026-29146) and missing encryption of sensitive data due to EncryptInterceptor bypass (CVE-2026-34486). The update also removes the tomcat clustering JAR from RPM builds. The advisory rates the security impact as Important. Updated packages are available for multiple architectures of Red Hat Enterprise Linux 10 and its extended update support versions.
AI Analysis
Technical Summary
This advisory addresses two security vulnerabilities in Apache Tomcat's EncryptInterceptor component used in tomcat9 on Red Hat Enterprise Linux 10. CVE-2026-29146 is an information disclosure vulnerability via a Padding Oracle attack vector, and CVE-2026-34486 involves missing encryption of sensitive data due to an EncryptInterceptor bypass. The update also includes a bug fix removing the tomcat clustering JAR from RPM builds. Red Hat has released updated tomcat9 packages for various architectures and support levels of RHEL 10 to remediate these issues.
Potential Impact
Successful exploitation of CVE-2026-29146 could lead to information disclosure through a Padding Oracle vulnerability in EncryptInterceptor. CVE-2026-34486 could allow sensitive data to be transmitted without encryption due to an EncryptInterceptor bypass. These vulnerabilities compromise confidentiality of data processed by tomcat9. The advisory rates the overall security impact as Important, indicating a high risk to affected systems if unpatched.
Mitigation Recommendations
Red Hat has released updated tomcat9 packages for Red Hat Enterprise Linux 10 and its extended update support versions that address these vulnerabilities. Users should apply the provided security update as detailed in the Red Hat advisory RHSA-2026:36790 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are indicated; applying the official update is the recommended remediation.
Red Hat Security Advisory: tomcat9 security, bug fix, and enhancement update
Description
Red Hat has issued a security advisory for tomcat9 in Red Hat Enterprise Linux 10, addressing two vulnerabilities: an information disclosure via a Padding Oracle vulnerability in EncryptInterceptor (CVE-2026-29146) and missing encryption of sensitive data due to EncryptInterceptor bypass (CVE-2026-34486). The update also removes the tomcat clustering JAR from RPM builds. The advisory rates the security impact as Important. Updated packages are available for multiple architectures of Red Hat Enterprise Linux 10 and its extended update support versions.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory addresses two security vulnerabilities in Apache Tomcat's EncryptInterceptor component used in tomcat9 on Red Hat Enterprise Linux 10. CVE-2026-29146 is an information disclosure vulnerability via a Padding Oracle attack vector, and CVE-2026-34486 involves missing encryption of sensitive data due to an EncryptInterceptor bypass. The update also includes a bug fix removing the tomcat clustering JAR from RPM builds. Red Hat has released updated tomcat9 packages for various architectures and support levels of RHEL 10 to remediate these issues.
Potential Impact
Successful exploitation of CVE-2026-29146 could lead to information disclosure through a Padding Oracle vulnerability in EncryptInterceptor. CVE-2026-34486 could allow sensitive data to be transmitted without encryption due to an EncryptInterceptor bypass. These vulnerabilities compromise confidentiality of data processed by tomcat9. The advisory rates the overall security impact as Important, indicating a high risk to affected systems if unpatched.
Mitigation Recommendations
Red Hat has released updated tomcat9 packages for Red Hat Enterprise Linux 10 and its extended update support versions that address these vulnerabilities. Users should apply the provided security update as detailed in the Red Hat advisory RHSA-2026:36790 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are indicated; applying the official update is the recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:36790
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-34486"]
- Cvss Version
- null
Threat ID: 6a4f6c1068715ace43153759
Added to database: 07/09/2026, 09:38:24 UTC
Last enriched: 07/09/2026, 09:40:58 UTC
Last updated: 07/10/2026, 02:47:18 UTC
Views: 3
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