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[GHSA-9m9p-7p6h-xv99] FileGator accepts arbitrary Unix permission values via... #8940

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[GHSA-9m9p-7p6h-xv99] FileGator accepts arbitrary Unix permission values via... #8940

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38 changes: 31 additions & 7 deletions advisories/unreviewed/2026/07/GHSA-9m9p-7p6h-xv99/GHSA-9m9p-7p6h-xv99.json
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Original file line number Diff line number Diff line change
@@ -1,23 +1,43 @@
{
"schema_version": "1.4.0",
"id": "GHSA-9m9p-7p6h-xv99",
"modified": "2026-07-21T21:32:43Z",
"modified": "2026-07-21T21:32:53Z",
"published": "2026-07-21T21:32:42Z",
"aliases": [
"CVE-2026-63358"
],
"summary": "Improper Chmod Permission Validation in FileGator ≤ 7.14.1 Leads to Privilege Escalation via `/chmoditems`",
"details": "FileGator accepts arbitrary Unix permission values via the '/chmoditems' API endpoint and passes the value directly to PHP's native 'chmod()' function through 'octdec()' conversion, with no validation. This allows an authenticated user with 'chmod' permission to upgrade their privileges to root.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "filegator/filegator"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.14.2"
}
]
}
],
"database_specific": {
"last_known_affected_version_range": "<= 7.14.1"
}
}
],
"affected": [],
"references": [
{
"type": "ADVISORY",
Expand All @@ -31,6 +51,10 @@
"type": "WEB",
"url": "https://github.com/filegator/filegator/blob/master/CHANGELOG.md#7142---2026-05-18"
},
{
"type": "PACKAGE",
"url": "https://github.com/filegator/filegator/blob/master/backend/Controllers/FileController.php"
},
{
"type": "WEB",
"url": "https://github.com/filegator/filegator/tree/master"
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