CVE-2026-29129: Apache Tomcat: TLS cipher order is not preserved

Published Apr 9, 2026
·
Updated

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.

Affected Software

5 affected components
Apache Tomcat>=11.0.16<=11.0.18, >=10.1.51<=10.1.52, >=9.0.114<=9.0.115
Apache Tomcat>=9.0.114<9.0.116
Apache Tomcat>=10.1.51<10.1.53
Apache Tomcat>=11.0.16<11.0.20
IBM watsonx.data intelligence<=5.2.2, 5.3.0, 5.3.1, 5.3.1-patch-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 11.0.20
  2. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 10.1.53
  3. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.116

Event History

Apr 9, 2026
CVE Published
via MITRE·07:19 PM
Data Sourced
via MITRE·07:19 PM
DescriptionWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeaknessAffected Software
Jun 24, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-29129?

The severity of CVE-2026-29129 is considered moderate, as it affects the TLS cipher preference order in certain versions of Apache Tomcat.

2

How do I fix CVE-2026-29129?

To fix CVE-2026-29129, upgrade to Apache Tomcat versions 11.0.20, 10.1.53, or 9.0.116.

3

Which Apache Tomcat versions are affected by CVE-2026-29129?

CVE-2026-29129 affects Apache Tomcat versions 11.0.16 through 11.0.18, 10.1.51 through 10.1.52, and 9.0.114 through 9.0.115.

4

What are the consequences of CVE-2026-29129?

The consequences of CVE-2026-29129 include the risk of TLS communications being compromised due to improperly ordered cipher preferences.

5

Is there a workaround for CVE-2026-29129?

There are no known effective workarounds for CVE-2026-29129, so upgrading to a fixed version is recommended.

Company

Resources

Contact

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