原始 OSV JSON
{
"id": "GHSA-g8wr-r2v2-vqc6",
"aliases": [
"CVE-2026-54721"
],
"details": "### Impact\nThe userform email subject field in the CMS is vulnerable to a specially crafted payload being used to run arbitrary code on the server.\n\n### Reported by\nJack Wallace from Bastion Security",
"summary": "silverstripe/userforms vulnerable to remote code execution via userforms email subject",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.4.9"
}
]
}
],
"package": {
"name": "silverstripe/userforms",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.7"
}
]
}
],
"package": {
"name": "silverstripe/userforms",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.1.0"
},
{
"fixed": "7.1.1"
}
]
}
],
"package": {
"name": "silverstripe/userforms",
"ecosystem": "Packagist"
}
}
],
"modified": "2026-08-27T16:53:18Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2026-08-27T16:53:17Z",
"references": [
{
"url": "https://github.com/silverstripe/silverstripe-userforms/security/advisories/GHSA-g8wr-r2v2-vqc6",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/pull/1441",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/pull/1442",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/commit/23c069866900c19b499bfa997d1e251e97491702",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/commit/c55494ad7c717b199a3c1663b43a54db5d95604c",
"type": "WEB"
},
{
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/userforms/CVE-2026-54721.yaml",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms",
"type": "PACKAGE"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/6.4.9",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.0.7",
"type": "WEB"
},
{
"url": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.1.1",
"type": "WEB"
},
{
"url": "https://www.silverstripe.org/download/security-releases/cve-2026-54721",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-94"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-08-27T16:53:17Z"
}
}