{"id":"CVE-2026-119550","kind":"vulnerability","aliases":["CVE-2026-119550"],"related":[],"title":"Jellyfin: playlist requests reveal hidden media IDs to restricted users","description":"Jellyfin through 12.4 contains an information disclosure vulnerability in PlaylistsController.GetPlaylist that allows authenticated users to read hidden item IDs by requesting public or shared playlists. Restricted or parental-controlled users can obtain GUIDs of inaccessible library items from unfiltered playlist ItemIds and then stream that hidden media.","summary":"Jellyfin through 12.4 returns unfiltered item IDs in public or shared playlists, so authenticated users can learn IDs of library items they are not allowed to see. A restricted or parental-controlled user can then stream that hidden media using those IDs.","severity":"medium","cvss":5.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["jellyfin","media-server","runtime","self-hosted"],"not_affected_if":["no-public-playlists","no-restricted-users","single-user-server"],"how_to_check":"- Check the installed Jellyfin server version (`jellyfin --version` or the dashboard's About page) and compare it against the affected range through 12.4.\n- Look for user accounts with restricted access or parental controls that can also reach public or shared playlists.","fix":null,"status":"open","published_at":"2026-10-30T12:16:41+00:00","first_seen_at":"2026-10-30T12:30:26+00:00","triaged_at":"2026-10-30T12:34:03+00:00","updated_at":"2026-10-30T12:34:03+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-30T12:34:03Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Jellyfin: playlist requests reveal hidden media IDs to restricted users","impact":"low","summary":"Jellyfin through 12.4 returns unfiltered item IDs in public or shared playlists, so authenticated users can learn IDs of library items they are not allowed to see. A restricted or parental-controlled user can then stream that hidden media using those IDs.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["jellyfin","self-hosted","media-server"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"restricted users stream media they are barred from accessing","analyst_note":"Find the fixed Jellyfin version and whether public or shared playlists are enabled by default, using the NVD entry and the Jellyfin project advisory.","how_to_check":"- Check the installed Jellyfin server version (`jellyfin --version` or the dashboard's About page) and compare it against the affected range through 12.4.\n- Look for user accounts with restricted access or parental controls that can also reach public or shared playlists.","plain_action":"","needs_analyst":true,"not_affected_if":["single-user-server","no-restricted-users","no-public-playlists"],"who_is_affected":"Servers running Jellyfin through 12.4 with multiple user accounts, especially where some users have library restrictions or parental controls. A single-user server with no restricted accounts has no one to exploit this. The sources do not say which fixed version resolves it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000696,"input_tokens":4154,"output_tokens":562,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-119550':13A,16A '-2026':12A,15A '12.4':27B,70C 'allow':49B,79C 'authent':38B,80C 'contain':71C 'control':57B,97C 'cve':11A,14A 'disclosur':74C 'guid':101C 'hidden':5A,63B,84C,114C 'host':24B 'id':7A,31B,42B,67B,86C 'inaccess':103C 'inform':73C 'item':30B,45B,85C,105C 'itemid':109C 'jellyfin':1A,17B,25B,68C 'learn':41B 'librari':44B,104C 'media':6A,19B,64B,115C 'media-serv':18B 'obtain':100C 'parent':56B,96C 'parental-control':55B,95C 'playlist':2A,36B,92C,108C 'playlistscontroller.getplaylist':77C 'public':33B,89C 'read':83C 'request':3A,88C 'restrict':9A,53B,93C 'return':28B 'reveal':4A 'runtim':21B 'see':51B 'self':23B 'self-host':22B 'server':20B 'share':35B,91C 'stream':61B,112C 'unfilt':29B,107C 'use':65B 'user':10A,39B,58B,81C,98C 'vulner':75C","nicknames":[],"mitigations":[],"who_affected":"Servers running Jellyfin through 12.4 with multiple user accounts, especially where some users have library restrictions or parental controls. A single-user server with no restricted accounts has no one to exploit this. The sources do not say which fixed version resolves it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"first_public_at":"2026-10-30T12:16:41+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-119550","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119550","severity":null,"published_at":"2026-10-30T12:16:41+00:00","modified_at":"2026-10-30T12:16:41+00:00","first_seen_at":"2026-10-30T12:30:26+00:00","fetched_at":"2026-10-30T12:30:26+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}