Auth bypass in Apache Tomcat
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 thro…
Vulnerability class: Broken Authentication
EPSS: 0.007 (49.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Apache Tomcat — versions 10.1.0
- Apache Tomcat_native
- Apache Software Foundation Tomcat — versions 11.0.0-M1, 10.1.0-M7, 9.0.83
- Apache Software Foundation Tomcat Native — versions 1.1.23, 1.2.0, 1.3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-29145?
- CVE-2026-29145 is a critical-severity vulnerability in Apache Tomcat, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-04-09.
- How severe is CVE-2026-29145?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2026-29145 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.