CVE-2026-29129: Configured cipher preference order not preserved in Apache Software Foundation Apache Tomcat
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.
AI Analysis
Technical Summary
CVE-2026-29129 is a vulnerability in Apache Tomcat where the configured cipher preference order is not preserved during TLS negotiation. This affects multiple versions of Apache Tomcat (11.0.16-11.0.18, 10.1.51-10.1.52, 9.0.114-9.0.115). The failure to preserve cipher preference order can result in weaker cipher suites being selected, potentially compromising confidentiality. The issue is addressed in Apache Tomcat versions 11.0.20, 10.1.53, and 9.0.116, which restore proper cipher preference handling.
Potential Impact
The vulnerability impacts the confidentiality of TLS connections by allowing weaker cipher suites to be negotiated despite administrator configuration. This could enable attackers to exploit weaker encryption algorithms, potentially leading to data exposure. There is no indication of impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.20, 10.1.53, or 9.0.116 where the vulnerability is fixed. Since this is a software vulnerability with an official fix available, applying the update is the recommended remediation. No other mitigation guidance is provided or necessary.
CVE-2026-29129: Configured cipher preference order not preserved in Apache Software Foundation Apache Tomcat
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-29129 is a vulnerability in Apache Tomcat where the configured cipher preference order is not preserved during TLS negotiation. This affects multiple versions of Apache Tomcat (11.0.16-11.0.18, 10.1.51-10.1.52, 9.0.114-9.0.115). The failure to preserve cipher preference order can result in weaker cipher suites being selected, potentially compromising confidentiality. The issue is addressed in Apache Tomcat versions 11.0.20, 10.1.53, and 9.0.116, which restore proper cipher preference handling.
Potential Impact
The vulnerability impacts the confidentiality of TLS connections by allowing weaker cipher suites to be negotiated despite administrator configuration. This could enable attackers to exploit weaker encryption algorithms, potentially leading to data exposure. There is no indication of impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.20, 10.1.53, or 9.0.116 where the vulnerability is fixed. Since this is a software vulnerability with an official fix available, applying the update is the recommended remediation. No other mitigation guidance is provided or necessary.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-03-04T08:16:56.456Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d7ff941cc7ad14da10e9c8
Added to database: 4/9/2026, 7:35:48 PM
Last enriched: 4/17/2026, 12:18:18 PM
Last updated: 5/25/2026, 12:19:52 PM
Views: 104
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.