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High ALAS2023-2026-3167 3 CVEs

Important: tomcat-native security update (Amazon Linux 2023)

Published Oct 12, 2026 · Updated Oct 12, 2026

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-86247: Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue. CVE-2026-86246: Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and ALLOW_NO_DHE_KEX. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fix the issue. CVE-2026-86243: Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier, unsupported versions may also be affected. Users are recommended to upgrade to version 1.3.9 or 2.0.16, which fix the issue.

Fixed packages 3

ReleasePackageFixed in
Amazon Linux · 2023 tomcat-native 0:2.0.16-1.amzn2023.0.1
Amazon Linux · 2023 tomcat-native-debuginfo 0:2.0.16-1.amzn2023.0.1
Amazon Linux · 2023 tomcat-native-debugsource 0:2.0.16-1.amzn2023.0.1

Vulnerabilities 3

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-86243.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-86246.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-86247.html