Home/CVE/CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apac
CVE

CVE-2026-29145

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apac

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 through 10.1.52, from 9.0.83 through 9.0.115.

Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.

CRITICAL · CVSS 9.1 EPSS 0.00028
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
▤

Affected Products & Versions

6
apache tomcat>= 9.0.83 and < 9.0.116
apache tomcat>= 10.1.1 and < 10.1.53
apache tomcat>= 11.0.0 and < 11.0.20
apache tomcatall versions
apache tomcat native>= 1.1.23 and < 1.3.7
apache tomcat native>= 2.0.0 and < 2.0.14
▤

Affected Packages

3
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.apache.tomcat.embed:tomcat-embed-core CRITICAL fixed in 9.0.116
Maven org.apache.tomcat:tomcat CRITICAL fixed in 9.0.116
Maven org.apache.tomcat:tomcat-catalina CRITICAL fixed in 9.0.116
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumTomcat WebServer Logs Deleted
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · security@apache.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Apr 2026 · 08:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

15
rhsaRHSA-2026:20405Important
rhsaRHSA-2026:20406Important
suse-csafSUSE-SU-2026:1603-1
suse-csafSUSE-SU-2026:1604-1
suse-csafSUSE-SU-2026:1572-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.apache.org/thread/yz5fxmhd2j43wgqykssdo7kltws57jfzMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/09/23Mailing ListThird Party Advisory
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