CVE-2026-50229: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

June 29, 2026 (updated July 2, 2026)

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat.

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.

References

lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0
nvd.nist.gov/vuln/detail/CVE-2026-50229

Code Behaviors & Features

Detect and mitigate CVE-2026-50229 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →