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tomcat: Apache Tomcat: Improper Authentication due to principal lookup failure

🗓️ 16 Sep 2026 15:15:31Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Remote attacker can bypass authentication in Apache Tomcat DataSourceRealm via CLIENT-CERT.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanynoarchtomcat1111.0.26-0.1.hum1tomcat11-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-admin-webapps11.0.26-0.1.hum1tomcat11-admin-webapps-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-common11.0.26-0.1.hum1tomcat11-common-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-docs-webapp11.0.26-0.1.hum1tomcat11-docs-webapp-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-el-6.0-api11.0.26-0.1.hum1tomcat11-el-6.0-api-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-jsp-4.0-api11.0.26-0.1.hum1tomcat11-jsp-4.0-api-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-lib11.0.26-0.1.hum1tomcat11-lib-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-servlet-6.1-api11.0.26-0.1.hum1tomcat11-servlet-6.1-api-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-user-instance11.0.26-0.1.hum1tomcat11-user-instance-11.0.26-0.1.hum1.noarch.rpm
Red Hat Hardened Imagesanynoarchtomcat11-webapps11.0.26-0.1.hum1tomcat11-webapps-11.0.26-0.1.hum1.noarch.rpm

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25 Sep 2026 07:05Current
7.4High risk
Vulners AI Score7.4
EPSS0.00526
SSVC
3