CVE-2026-24733

Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET requests by sending a (specification invalid) HEAD request using HTTP/0.9. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0.M1 through 9.0.112. Older, EOL versions are also affected. Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fixes the issue.

Affected products

Apache Tomcat, Red Os

Apache Tomcat

< 9.0.113, 10.1.50, 11.0.15, 9.0.0, 10.0.0, 11.0.0

Fix

Available

CVSS 3.1

6.5 MEDIUM

EPSS

0.5% (40th percentile)

Weakness

CWE-20

NVD status

Modified

Published

2026-02-17

No exploit for CVE-2026-24733 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.