CVE-2026-126499

Jellyfin before 12.0 Path Traversal via Library VirtualFolders Endpoints

Published Nov 11, 2026 CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed
Description
Jellyfin before 12.0 contains a path traversal vulnerability in the DELETE /Library/VirtualFolders and POST /Library/VirtualFolders/Name endpoints that allows attackers to delete or move directories via unvalidated library names. Unauthenticated attackers can supply names like .. or absolute paths before setup completes to recursively delete the data directory and jellyfin.db.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Jellyfin before 12.0 contains a path traversal vulnerability in the DELETE /Library/VirtualFolders and POST /Library/VirtualFolders/Name endpoints that allows attackers to delete or move directories via unvalidated library names. Unauthenticated attackers can supply names like .. or absolute paths before setup completes to recursively delete the data directory and jellyfin.db.
Title Jellyfin before 12.0 Path Traversal via Library VirtualFolders Endpoints
First Time appeared Jellyfin
Jellyfin jellyfin
Weaknesses CWE-22
CPEs cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*
Vendors & Products Jellyfin
Jellyfin jellyfin
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 13, 2026, 4:50 PM
Reserved
Nov 10, 2026, 9:45 PM
Status
Awaiting Analysis
Published
Nov 11, 2026, 1:17 AM
Modified
Nov 13, 2026, 5:17 PM