Apache Tomcat, Apache Tomcat Native: OCSP checks sometimes soft-fail even when soft-fail is disabled

Summary

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.

Timeline

1. Apr 9, 2026, 7:20 PM UTCCVE published
2. Apr 10, 2026, 6:10 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Apr 10, 2026, 6:11 PM UTCRecord last updated

Affected versions

• Apache Software Foundation 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 Software Foundation 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

• org.apache.tomcat:tomcat-coyote-ffmMaven

  From 9.0.83 · fixed in 9.0.116

• org.apache.tomcat:tomcat-coyote-ffmMaven

  From 10.1.0-M7 · fixed in 10.1.53

• org.apache.tomcat:tomcat-coyote-ffmMaven

  From 11.0.0-M1 · fixed in 11.0.20

• org.apache.tomcat:tomcatMaven

  From 9.0.83 · fixed in 9.0.116

• org.apache.tomcat:tomcatMaven

  From 10.1.0-M7 · fixed in 10.1.53

• org.apache.tomcat:tomcatMaven

  From 11.0.0-M1 · fixed in 11.0.20

References 5