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Medium ALAS2023-2026-1672 9 CVEs

Moderate: tomcat9 security update (Amazon Linux 2023)

Published May 11, 2026 · Updated May 13, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-34500: CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue. CVE-2026-34487: Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.13 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue. CVE-2026-34483: Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117 , which fix the issue. CVE-2026-32990: Improper Input Validation vulnerability in Apache Tomcat due to an incomplete fix of CVE-2025-66614. This issue affects Apache Tomcat: from 11.0.15 through 11.0.19, from 10.1.50 through 10.1.52, from 9.0.113 through 9.0.115. Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue. CVE-2026-29146: Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.0.0-M1 through 10.1.52, from 9.0.13 through 9..115, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue. CVE-2026-29145: CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue. CVE-2026-29129: Configured cipher preference order not preserved vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.16 through 11.0.18, from 10.1.51 through 10.1.52, from 9.0.114 through 9.0.115. Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue. CVE-2026-25854: Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Other, unsupported versions may also be affected Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue. CVE-2026-24880: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other, unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.

Fixed packages 8

ReleasePackageFixed in
Amazon Linux · 2023 tomcat9 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-admin-webapps 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-docs-webapp 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-el-3.0-api 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-jsp-2.3-api 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-lib 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-servlet-4.0-api 1:9.0.117-1.amzn2023.0.1
Amazon Linux · 2023 tomcat9-webapps 1:9.0.117-1.amzn2023.0.1

Vulnerabilities 9

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-24880.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-25854.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-29129.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-29145.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-29146.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32990.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-34483.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-34487.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-34500.html