CVE-2026-50229 PUBLISHED

Apache Tomcat: XSS in number guess example

Assigner: apache
Reserved: 04.06.2026 Published: 29.06.2026 Updated: 30.06.2026

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.

Product Status

Vendor Apache Software Foundation
Product Apache Tomcat
Versions Default: unaffected
  • affected from 11.0.0-M1 to 11.0.22 (incl.)
  • affected from 10.1.0-M1 to 10.1.55 (incl.)
  • affected from 9.0.0.M1 to 9.0.118 (incl.)
  • affected from 8.5.0 to 8.5.100 (incl.)
  • affected from 7.0.0 to 7.0.109 (incl.)
  • unknown from 0 to 7.0.0 (excl.)

Credits

  • Erichen, Institute of Computing Technology, Chinese Academy of Sciences finder
  • Yashar Shahinzadeh finder
  • Amirmohammad Safari finder

References

Problem Types

  • CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) CWE