CVE-2026-41293 PUBLISHED

Apache Tomcat: HTTP/2 request headers not validated

Assigner: apache
Reserved: 20.04.2026 Published: 12.05.2026 Updated: 12.05.2026

Improper Input Validation vulnerability in Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected.

Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

Product Status

Vendor Apache Software Foundation
Product Apache Tomcat
Versions Default: unaffected
  • affected from 11.0.0-M1 to 11.0.21 (incl.)
  • affected from 10.1.0-M1 to 10.1.54 (incl.)
  • affected from 9.0.0.M1 to 9.0.117 (incl.)
  • affected from 10.0.0-M1 to 10.0.27 (incl.)
  • affected from 8.5.0 to 8.5.100 (incl.)

Credits

  • Dawit Jeong (@dawitngoliath) finder

References

Problem Types

  • CWE-20 Improper Input Validation CWE