{
"id": "GHSA-hwvq-2w67-rvxp",
"aliases": [
"CVE-2026-47346"
],
"details": "### Problem\nBackend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., `.FORM.YAML`) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts.\n\n### Solution\nUpdate to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.\n\n### Credits\nTYPO3 CMS thanks Alexander Künzl for reporting this issue, and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke for fixing it.\n\n### Resources\n* [TYPO3-CORE-SA-2026-008](https://typo3.org/security/advisory/typo3-core-sa-2026-008)",
"summary": "TYPO3 CMS has Broken Access Control in its Form Framework",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "10.4.57"
}
]
}
],
"package": {
"name": "typo3/cms-core",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "11.0.0"
},
{
"fixed": "11.5.51"
}
]
}
],
"package": {
"name": "typo3/cms-core",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "12.0.0"
},
{
"fixed": "12.4.46"
}
]
}
],
"package": {
"name": "typo3/cms-core",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.4.31"
}
]
}
],
"package": {
"name": "typo3/cms-core",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "14.0.0"
},
{
"fixed": "14.3.3"
}
]
}
],
"package": {
"name": "typo3/cms-core",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "10.4.57"
}
]
}
],
"package": {
"name": "typo3/cms-form",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "11.0.0"
},
{
"fixed": "11.5.51"
}
]
}
],
"package": {
"name": "typo3/cms-form",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "12.0.0"
},
{
"fixed": "12.4.46"
}
]
}
],
"package": {
"name": "typo3/cms-form",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.4.31"
}
]
}
],
"package": {
"name": "typo3/cms-form",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "14.0.0"
},
{
"fixed": "14.3.3"
}
]
}
],
"package": {
"name": "typo3/cms-form",
"ecosystem": "Packagist"
}
}
],
"modified": "2026-06-12T19:32:09Z",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
}
],
"published": "2026-06-12T19:32:09Z",
"references": [
{
"url": "https://github.com/TYPO3/typo3/security/advisories/GHSA-hwvq-2w67-rvxp",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47346",
"type": "ADVISORY"
},
{
"url": "https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47",
"type": "WEB"
},
{
"url": "https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45",
"type": "WEB"
},
{
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47346.yaml",
"type": "WEB"
},
{
"url": "https://github.com/TYPO3/typo3",
"type": "PACKAGE"
},
{
"url": "https://typo3.org/security/advisory/typo3-core-sa-2026-008",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-178",
"CWE-862"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-06-09T11:16:52Z",
"github_reviewed_at": "2026-06-12T19:32:09Z"
}
}