GHSA-h6fc-48rj-7qqh
Apache Tomcat - Digest authenticator will authenticate any unknown user
At a glance
- Published
- Updated
- CVE
- CVE-2026-43512
- Aliases
- BIT-tomcat-2026-43512
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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
Affected packages
| Package | Versions |
|---|---|
| Maven · org.apache.tomcat.embed:tomcat-embed-core | introduced 0, fixed 9.0.118 |
| Maven · org.apache.tomcat.embed:tomcat-embed-core | introduced 10.1.0-M1, fixed 10.1.55 |
| Maven · org.apache.tomcat.embed:tomcat-embed-core | introduced 11.0.0-M1, fixed 11.0.22 |
| Maven · org.apache.tomcat:tomcat | introduced 0, fixed 9.0.118 |
| Maven · org.apache.tomcat:tomcat | introduced 10.1.0-M1, fixed 10.1.55 |
| Maven · org.apache.tomcat:tomcat | introduced 11.0.0-M1, fixed 11.0.22 |
| Maven · org.apache.tomcat:tomcat-catalina | introduced 0, fixed 9.0.118 |
| Maven · org.apache.tomcat:tomcat-catalina | introduced 10.1.0-M1, fixed 10.1.55 |
| Maven · org.apache.tomcat:tomcat-catalina | introduced 11.0.0-M1, fixed 11.0.22 |
References
- 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
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |