CVE-2026-35031

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

Exploit for CVE-2026-35031

CVE-2026-35031: Jellyfin Subtitle Upload Path Traversal to RCE...

CVE-2026-35031

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

EUVD-2026-22764

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

CVE-2026-35031 Jellyfin: Potential RCE via subtitle upload path traversal + .strm chain

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

CVE-2026-35031 Jellyfin: Potential RCE via subtitle upload path traversal + .strm chain

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

CVE-2026-35031

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

CVE-2026-35031

Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the subtitle upload endpoint POST /Videos/itemId/Subtitles, where the Format field is not validated, allowing path traversal via the file extension and enabling arbitrary file write. Th...

CVE-2026-35031

Summary: Jellyfin versions before 10.11.7 are affected by a vulnerability in the subtitle upload endpoint (POST /Videos/{itemId}/Subtitles) where the Format field isn’t validated, allowing path traversal via the file extension and leading to arbitrary file write. This can be chained to read via ....