CVE-2026-24733
LOW EPSS 38.7%
Published Feb 17, 20264mo ago · Modified Jun 17, 20261w ago
3.7 CVSS 3.1
Published Feb 17, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
38.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-20 Improper Input Validation Validation
Affected Products 66
| Vendor | Product | Version | Range |
|---|---|---|---|
| apache | tomcat | * | ≥9.0.1 – <9.0.113 |
| apache | tomcat | * | ≥10.1.1 – <10.1.50 |
| apache | tomcat | * | ≥11.0.1 – <11.0.15 |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 9.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 10.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
| apache | tomcat | 11.0.0 | any |
References 1
- lists.apache.org https://lists.apache.org/thread/6xk3t65qpn1myp618krtfotbjn1qt90f
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.