RHSA-2026:37136: Important: tomcat security update

Published Jul 9, 2026
·
Updated

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) 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

13 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server - TUS
redhat/tomcat<9.0.87-2.el8_8
9.0.87-2.el8_8
redhat/tomcat<9.0.87-2.el8_8
9.0.87-2.el8_8
redhat/tomcat-admin-webapps<9.0.87-2.el8_8
9.0.87-2.el8_8
redhat/tomcat-docs-webapp<9.0.87-2.el8_8
9.0.87-2.el8_8
redhat/tomcat-el<3.0-api-9.0.87-2.el8_8
3.0-api-9.0.87-2.el8_8
redhat/tomcat-jsp<2.3-api-9.0.87-2.el8_8
2.3-api-9.0.87-2.el8_8
redhat/tomcat-lib<9.0.87-2.el8_8
9.0.87-2.el8_8
redhat/tomcat-servlet<4.0-api-9.0.87-2.el8_8
4.0-api-9.0.87-2.el8_8
redhat/tomcat-webapps<9.0.87-2.el8_8
9.0.87-2.el8_8

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.87-2.el8_8
  2. Upgrade

    Upgrade redhat/tomcat-admin-webapps to a version that resolves this vulnerability.

    Fixed in 9.0.87-2.el8_8
  3. Upgrade

    Upgrade redhat/tomcat-docs-webapp to a version that resolves this vulnerability.

    Fixed in 9.0.87-2.el8_8
  4. Upgrade

    Upgrade redhat/tomcat-el to a version that resolves this vulnerability.

    Fixed in 3.0-api-9.0.87-2.el8_8
  5. Upgrade

    Upgrade redhat/tomcat-jsp to a version that resolves this vulnerability.

    Fixed in 2.3-api-9.0.87-2.el8_8
  6. Upgrade

    Upgrade redhat/tomcat-lib to a version that resolves this vulnerability.

    Fixed in 9.0.87-2.el8_8
  7. Upgrade

    Upgrade redhat/tomcat-servlet to a version that resolves this vulnerability.

    Fixed in 4.0-api-9.0.87-2.el8_8
  8. Upgrade

    Upgrade redhat/tomcat-webapps to a version that resolves this vulnerability.

    Fixed in 9.0.87-2.el8_8

Event History

Jul 9, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·07:18 AM
Data Sourced
via Red Hat·07:18 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:37136?

The severity of RHSA-2026:37136 is high, rated at 7.

2

How do I fix RHSA-2026:37136?

To fix RHSA-2026:37136, apply the latest security update for Apache Tomcat as specified in the advisory.

3

What vulnerabilities are addressed in RHSA-2026:37136?

RHSA-2026:37136 addresses an information disclosure vulnerability via Padding Oracle in EncryptInterceptor and missing encryption of sensitive data.

4

Which software versions are affected by RHSA-2026:37136?

The affected software includes various versions of Red Hat Tomcat and Red Hat Enterprise Linux for x86_64.

5

When was RHSA-2026:37136 published?

RHSA-2026:37136 was published on July 9, 2026.

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