What is CVE-2026-29129?

CVE-2026-29129 is a high-severity vulnerability in Apache Tomcat, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2026-04-09.

How severe is CVE-2026-29129?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Tomcat

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.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2026-04-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Apache Tomcat
Apache Software Foundation Tomcat — versions 11.0.16, 10.1.51, 9.0.114

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

lists.apache.org/thread/r4h1t6f8xhxsxfm6c2z5cprolsosho3f (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-29129?: CVE-2026-29129 is a high-severity vulnerability in Apache Tomcat, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2026-04-09.
How severe is CVE-2026-29129?: High severity. CVSS v3 base score is 7.5 out of 10.