GHSA-h6fc-48rj-7qqh
Apache Tomcat - Digest authenticator will authenticate any unknown user
Quick fix
GHSA-h6fc-48rj-7qqh — org.apache.tomcat.embed:tomcat-embed-core: upgrade to the fixed version with the command below.
# pom.xml: bump <version>9.0.118</version> for org.apache.tomcat.embed:tomcat-embed-coreDetails
Versions Affected: Apache Tomcat 11.0.0-M1 to 11.0.21 Apache Tomcat 10.1.0-M1 to 10.1.54 Apache Tomcat 9.0.0.M1 to 9.0.117 Older, unsupported versions may also be affected
Description: When DIGEST authentication was configured, any user not known to the configured Realm would be authenticated if they presented the password "null".
Mitigation: Users of the affected versions should apply one of the following mitigations: - Upgrade to Apache Tomcat 11.0.22 or later - Upgrade to Apache Tomcat 10.1.55 or later - Upgrade to Apache Tomcat 9.0.118 or later
Are you affected?
Enter the version of the package you're using.
Affected packages
0Fixed in: 9.0.118# pom.xml: bump <version>9.0.118</version> for org.apache.tomcat.embed:tomcat-embed-core10.1.0-M1Fixed in: 10.1.55# pom.xml: bump <version>10.1.55</version> for org.apache.tomcat.embed:tomcat-embed-core11.0.0-M1Fixed in: 11.0.22# pom.xml: bump <version>11.0.22</version> for org.apache.tomcat.embed:tomcat-embed-core0Fixed in: 9.0.118# pom.xml: bump <version>9.0.118</version> for org.apache.tomcat:tomcat10.1.0-M1Fixed in: 10.1.55# pom.xml: bump <version>10.1.55</version> for org.apache.tomcat:tomcat11.0.0-M1Fixed in: 11.0.22# pom.xml: bump <version>11.0.22</version> for org.apache.tomcat:tomcat0Fixed in: 9.0.118# pom.xml: bump <version>9.0.118</version> for org.apache.tomcat:tomcat-catalina10.1.0-M1Fixed in: 10.1.55# pom.xml: bump <version>10.1.55</version> for org.apache.tomcat:tomcat-catalina11.0.0-M1Fixed in: 11.0.22# pom.xml: bump <version>11.0.22</version> for org.apache.tomcat:tomcat-catalinaReferences
- https://nvd.nist.gov/vuln/detail/CVE-2026-43512[ADVISORY]
- https://github.com/apache/tomcat/commit/3d4d3fae07a6cd9c2eb193c5491001740ec64448[WEB]
- https://github.com/apache/tomcat/commit/6565a6cb6499e56fe2f34457cec99f9d1c4f39e9[WEB]
- https://github.com/apache/tomcat/commit/a99c355e8199adbfd67c9a1fffbd85b810b196cd[WEB]
- https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73[WEB]
- https://tomcat.apache.org/security-10.html[WEB]
- https://tomcat.apache.org/security-11.html[WEB]
- https://tomcat.apache.org/security-9.html[WEB]
- http://www.openwall.com/lists/oss-security/2026/05/12/8[WEB]