Medium
File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope
Type: advisorySources: OSV
File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55668
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 18:03 UTC · Revision 1
Source evidence
File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope
core-osv · Original sourcePublished 8 Jul 2026, 14:55 UTC
File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.
osv:CVE-2026-55668
Complete source record
{
"id": "b81943f413b219ead6d8988dbdcacdcef7eea860f4f941aea6f9486dc909f66f",
"url": "https://osv.dev/vulnerability/CVE-2026-55668",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope",
"summary": "File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.",
"evidence": "osv:CVE-2026-55668",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-55668",
"aliases": [
"CVE-2026-55668",
"GHSA-8wc8-hf36-mjh9",
"GO-2026-6020"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/filebrowser/filebrowser",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "bd1520fe095d2f373f8fbcbfc01f855ade7e90fb"
},
{
"fixed": "64511ce45e3be379e965f7f4fb0929a068d5bb81"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.63.16"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "64511ce45e3be379e965f7f4fb0929a068d5bb81"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "bd1520fe095d2f373f8fbcbfc01f855ade7e90fb"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v2.63.16"
}
]
}
}
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55668.json"
}
}
],
"modified": "2026-10-28T02:30:31.200312285Z",
"provider": "osv",
"references": [
"https://github.com/filebrowser/filebrowser/releases/tag/v2.63.16",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55668.json",
"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8wc8-hf36-mjh9",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55668",
"https://github.com/filebrowser/filebrowser/commit/64511ce45e3be379e965f7f4fb0929a068d5bb81"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22",
"CWE-59"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55668.json"
}
},
"related_cves": [
{
"value": "CVE-2026-55668",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 498127,
"published_at": "2026-07-08T14:55:25.433+00:00"
}