CVE-2026-24733
published 2026-02-17CVE-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…
low3.7CVSS 3.1
AVNACHPRNUINSUCNILAN
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
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | >= 10.1.1 < 10.1.50 | 10.1.50 |
| apache | tomcat | >= 11.0.1 < 11.0.15 | 11.0.15 |
| apache | tomcat | >= 9.0.1 < 9.0.113 | 9.0.113 |
| apache_software_foundation | apache_tomcat | <= 8.5.100 | — |
| apache_software_foundation | apache_tomcat | 10.1.0-M1 – 10.1.49 | — |
| apache_software_foundation | apache_tomcat | 11.0.0-M1 – 11.0.14 | — |
| apache_software_foundation | apache_tomcat | 9.0.0.M1 – 9.0.112 | — |
| debian | tomcat10 | < tomcat10 10.1.52-1~deb12u1 (bookworm) | tomcat10 10.1.52-1~deb12u1 (bookworm) |
| debian | tomcat11 | < tomcat10 10.1.52-1~deb12u1 (bookworm) | tomcat10 10.1.52-1~deb12u1 (bookworm) |
| debian | tomcat9 | < tomcat10 10.1.52-1~deb12u1 (bookworm) | tomcat10 10.1.52-1~deb12u1 (bookworm) |
CVSS provenance
nvdv3.13.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
osv3.7LOW