CVE-2026-24880 PUBLISHED

Apache Tomcat: Request smuggling via invalid chunk extension

Assigner: apache
Reserved: 27.01.2026 Published: 09.04.2026 Updated: 09.04.2026

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other, unsupported versions may also be affected.

Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.

Product Status

Vendor Apache Software Foundation
Product Apache Tomcat
Versions Default: unaffected
  • affected from 11.0.0-M1 to 11.0.18 (incl.)
  • affected from 10.1.0-M1 to 10.1.52 (incl.)
  • affected from 9.0.0.M1 to 9.0.115 (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.)
  • unknown from 8.0.0-RC1 to 8.0.53 (incl.)

Credits

  • Xclow3n finder

References

Problem Types

  • CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') CWE