ghsa-qq5r-98hh-rxc9
CVSS 2.7 osv_maven
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.
Timeline
- Published
- unknown
- Last Modified
- unknown
CVSS Details
CVSS details not available.
Affected Products
No product information available.
Weaknesses (CWE)
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-24733
- https://github.com/apache/tomcat/commit/2e2fa23f2635bbb819759576a2f2f5e64ecf7c5f
- https://github.com/apache/tomcat/commit/6c73d74ff281260d74c836370ff6b82f1da8048b
- https://github.com/apache/tomcat/commit/711b465cf22684a1acf0cb43501cdbbce9b6c5f4
- https://github.com/apache/tomcat
- https://lists.apache.org/thread/6xk3t65qpn1myp618krtfotbjn1qt90f
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
Linked Vulnerabilities
No linked vulnerabilities found.
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],
"aliases": [
"CVE-2026-24733"
],
"database_specific": {
"cwe_ids": [
"CWE-20"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-19T15:06:26Z",
"nvd_published_at": "2026-02-17T19:21:56Z",
"severity": "LOW"
},
"details": "Improper Input Validation vulnerability in Apache Tomcat.\n\nTomcat 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.\n\nThis 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.\n\n\nOlder, EOL versions are also affected.\n\nUsers 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.",
"id": "GHSA-qq5r-98hh-rxc9",
"modified": "2026-09-10T09:40:57.217995905Z",
"published": "2026-02-17T21:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24733"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/2e2fa23f2635bbb819759576a2f2f5e64ecf7c5f"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/6c73d74ff281260d74c836370ff6b82f1da8048b"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/711b465cf22684a1acf0cb43501cdbbce9b6c5f4"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/tomcat"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/6xk3t65qpn1myp618krtfotbjn1qt90f"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-10.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-11.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-9.html"
}
],
"schema_version": "1.9.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Apache Tomcat - Security constraint bypass with HTTP/0.9"
}