{
"id": "GHSA-8x3j-439w-537c",
"aliases": [
"CVE-2026-46725"
],
"details": "The TYPO3 \"Content Element Selector\" (ceselector) extension passes an attacker-controlled cookie directly to PHP's `unserialize()` without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with `Persistent Mode: Static` in the plugin settings. This has been patched in version 3.0.3, 4.0.2, 5.0.1, and 6.0.1.",
"summary": "TYPO3 Remote Code Execution in extension \"Content Element Selector\" (ceselector)",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.0.1"
}
]
}
],
"package": {
"name": "mmc/ceselector",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.0.0"
},
{
"fixed": "5.0.1"
}
]
}
],
"package": {
"name": "mmc/ceselector",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.2"
}
]
}
],
"package": {
"name": "mmc/ceselector",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.3"
}
]
}
],
"package": {
"name": "mmc/ceselector",
"ecosystem": "Packagist"
}
}
],
"modified": "2026-06-29T17:30:21Z",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"published": "2026-05-19T12:31:39Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46725",
"type": "ADVISORY"
},
{
"url": "https://bitbucket.org/thismaechler/typo3-ext-ceselector",
"type": "PACKAGE"
},
{
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/mmc/ceselector/CVE-2026-46725.yaml",
"type": "WEB"
},
{
"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-013",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2026-05-19T10:16:25Z",
"github_reviewed_at": "2026-06-29T17:30:20Z"
}
}