CVE-2026-24880: Apache Tomcat has an HTTP Request/Response Smuggling vulnerability

April 9, 2026 (updated April 10, 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.

References

github.com/advisories/GHSA-563x-q5rq-57qp
github.com/apache/tomcat
lists.apache.org/thread/2c682qnlg2tv4o5knlggqbl9yc2gb5sn
nvd.nist.gov/vuln/detail/CVE-2026-24880

Code Behaviors & Features

Detect and mitigate CVE-2026-24880 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 →