Vulnerability in Apache Software Foundation Apache Tomcat

[ Description ]Official description

Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4090

  Oracle Communications: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-101763CVE-2026-58389CVE-2026-56740+85 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4083

  Oracle Retail Applications: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-34481CVE-2026-41855CVE-2026-59901+1 more CVEs

[ References ]References

• lists.apache.org/thread/dcjdcnnnww9hhdm016hr0l7hpw1bzjfpvendor-advisory