CVE-2026-24733

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Source
https://cve.org/CVERecord?id=CVE-2026-24733
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-24733.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-24733
Aliases
Downstream
Related
Published
2026-02-17T18:50:43.871Z
Modified
2026-06-15T12:23:37.930228410Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Apache Tomcat: Security constraint bypass with HTTP/0.9
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24733.json",
    "cna_assigner": "apache",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "11.0.0-M1"
                },
                {
                    "last_affected": "11.0.14"
                },
                {
                    "introduced": "10.1.0-M1"
                },
                {
                    "last_affected": "10.1.49"
                },
                {
                    "introduced": "9.0.0.M1"
                },
                {
                    "last_affected": "9.0.112"
                },
                {
                    "last_affected": "8.5.100"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "11.0.0-M1"
                },
                {
                    "fixed": "11.0.14"
                },
                {
                    "introduced": "10.1.0-M1"
                },
                {
                    "fixed": "10.1.49"
                },
                {
                    "introduced": "9.0.0.M1"
                },
                {
                    "fixed": "9.0.112"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "cwe_ids": [
        "CWE-20"
    ]
}
References

Affected packages

Git / github.com/apache/tomcat

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat
Events
Introduced
3c78e95e36268dfb76db1570f0cf49104fa6eabc
Fixed
1da89d3d01aece456d622548d92055a60ff19c37
Introduced
934df02dc68e72b95a38f372017f1b89b0d13a76
Fixed
cd6d685800b0e46797325866dee2c9a78fc8e69c
Introduced
6c56147c3966fde5ae34aab2b253593e8700a28c
Fixed
692d6ffc5aa75d6804749ffcc14353c6b046fd92
Introduced
0 Unknown introduced commit / All previous commits are affected
Database specific 
{
    "extracted_events": [
        {
            "introduced": "9.0.1"
        },
        {
            "fixed": "9.0.113"
        },
        {
            "introduced": "10.1.1"
        },
        {
            "fixed": "10.1.50"
        },
        {
            "introduced": "11.0.1"
        },
        {
            "fixed": "11.0.15"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "9.0.0-milestone1"
        },
        {
            "last_affected": "9.0.0-milestone10"
        },
        {
            "last_affected": "9.0.0-milestone11"
        },
        {
            "last_affected": "9.0.0-milestone12"
        },
        {
            "last_affected": "9.0.0-milestone13"
        },
        {
            "last_affected": "9.0.0-milestone14"
        },
        {
            "last_affected": "9.0.0-milestone15"
        },
        {
            "last_affected": "9.0.0-milestone16"
        },
        {
            "last_affected": "9.0.0-milestone17"
        },
        {
            "last_affected": "9.0.0-milestone18"
        },
        {
            "last_affected": "9.0.0-milestone19"
        },
        {
            "last_affected": "9.0.0-milestone2"
        },
        {
            "last_affected": "9.0.0-milestone20"
        },
        {
            "last_affected": "9.0.0-milestone21"
        },
        {
            "last_affected": "9.0.0-milestone22"
        },
        {
            "last_affected": "9.0.0-milestone23"
        },
        {
            "last_affected": "9.0.0-milestone24"
        },
        {
            "last_affected": "9.0.0-milestone25"
        },
        {
            "last_affected": "9.0.0-milestone26"
        },
        {
            "last_affected": "9.0.0-milestone27"
        },
        {
            "last_affected": "9.0.0-milestone3"
        },
        {
            "last_affected": "9.0.0-milestone4"
        },
        {
            "last_affected": "9.0.0-milestone5"
        },
        {
            "last_affected": "9.0.0-milestone6"
        },
        {
            "last_affected": "9.0.0-milestone7"
        },
        {
            "last_affected": "9.0.0-milestone8"
        },
        {
            "last_affected": "9.0.0-milestone9"
        },
        {
            "last_affected": "10.0.0-milestone1"
        },
        {
            "last_affected": "10.0.0-milestone10"
        },
        {
            "last_affected": "10.0.0-milestone2"
        },
        {
            "last_affected": "10.0.0-milestone3"
        },
        {
            "last_affected": "10.0.0-milestone4"
        },
        {
            "last_affected": "10.0.0-milestone5"
        },
        {
            "last_affected": "10.0.0-milestone6"
        },
        {
            "last_affected": "10.0.0-milestone7"
        },
        {
            "last_affected": "10.0.0-milestone8"
        },
        {
            "last_affected": "10.0.0-milestone9"
        },
        {
            "last_affected": "11.0.0-milestone1"
        },
        {
            "last_affected": "11.0.0-milestone10"
        },
        {
            "last_affected": "11.0.0-milestone11"
        },
        {
            "last_affected": "11.0.0-milestone12"
        },
        {
            "last_affected": "11.0.0-milestone13"
        },
        {
            "last_affected": "11.0.0-milestone14"
        },
        {
            "last_affected": "11.0.0-milestone15"
        },
        {
            "last_affected": "11.0.0-milestone16"
        },
        {
            "last_affected": "11.0.0-milestone17"
        },
        {
            "last_affected": "11.0.0-milestone18"
        },
        {
            "last_affected": "11.0.0-milestone19"
        },
        {
            "last_affected": "11.0.0-milestone2"
        },
        {
            "last_affected": "11.0.0-milestone20"
        },
        {
            "last_affected": "11.0.0-milestone21"
        },
        {
            "last_affected": "11.0.0-milestone22"
        },
        {
            "last_affected": "11.0.0-milestone23"
        },
        {
            "last_affected": "11.0.0-milestone24"
        },
        {
            "last_affected": "11.0.0-milestone25"
        },
        {
            "last_affected": "11.0.0-milestone26"
        },
        {
            "last_affected": "11.0.0-milestone3"
        },
        {
            "last_affected": "11.0.0-milestone4"
        },
        {
            "last_affected": "11.0.0-milestone5"
        },
        {
            "last_affected": "11.0.0-milestone6"
        },
        {
            "last_affected": "11.0.0-milestone7"
        },
        {
            "last_affected": "11.0.0-milestone8"
        },
        {
            "last_affected": "11.0.0-milestone9"
        }
    ],
    "cpe": [
        "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone1:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone10:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone2:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone3:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone4:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone5:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone6:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone7:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone8:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:10.0.0:milestone9:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone1:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone10:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone11:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone12:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone13:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone14:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone15:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone16:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone17:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone18:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone19:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone2:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone20:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone21:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone22:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone23:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone24:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone25:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone26:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone3:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone4:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone5:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone6:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone7:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone8:*:*:*:*:*:*",
        "cpe:2.3:a:apache:tomcat:11.0.0:milestone9:*:*:*:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-24733.json"