CVE-2026-34500
Published:April 09, 2026
Updated:April 20, 2026
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.
Affected Packages
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=9.0.92 <9.0.117Fix Suggestion:
Update to version 9.0.117https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=11.0.0-M14 <11.0.21Fix Suggestion:
Update to version 11.0.21https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=10.1.22 <10.1.54Fix Suggestion:
Update to version 10.1.54org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=10.1.23 <10.1.54Fix Suggestion:
Update to version 10.1.54org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=10.1.23 <10.1.54Fix Suggestion:
Update to version 10.1.54org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=9.0.93 <9.0.117Fix Suggestion:
Update to version 9.0.117org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=11.0.0-M14 <11.0.21Fix Suggestion:
Update to version 11.0.21org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=10.1.23 <10.1.54Fix Suggestion:
Update to version 10.1.54org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=11.0.0-M14 <11.0.21Fix Suggestion:
Update to version 11.0.21org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=9.0.93 <9.0.117Fix Suggestion:
Update to version 9.0.117org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=11.0.0-M14 <11.0.21Fix Suggestion:
Update to version 11.0.21org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=9.0.93 <9.0.117Fix Suggestion:
Update to version 9.0.117Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Authentication
EPSS
Base Score:
0.05
