{"id":"CVE-2026-129131","kind":"vulnerability","aliases":["CVE-2026-129131"],"related":[],"title":"Gameyfin: missing authorization lets anonymous users read library data","description":"Gameyfin before 2.6.2 contains a missing authorization vulnerability that allows unauthenticated attackers to bypass login-required mode by calling Hilla endpoints annotated with @AnonymousAllowed. Attackers can POST to synchronous endpoint methods such as GameEndpoint.sync, which LiveSubscriptionSecurity never checks, to retrieve game catalog metadata, libraries, platforms, plugins and game requests.","summary":"Gameyfin, a self-hosted game library manager, has a missing authorization check on Hilla endpoints marked AnonymousAllowed. An unauthenticated attacker can bypass login-required mode and read game catalog metadata, libraries, platforms, plugins and game requests.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Gameyfin","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["gameyfin","hilla","java","other","self-hosted"],"not_affected_if":["gameyfin-2.6.2-or-later","login-not-required-mode"],"how_to_check":"- Check the Gameyfin version: anything below `2.6.2` is affected.\n- Confirm whether login-required mode is enabled; the bypass only matters when it is.","fix":"- Gameyfin: upgrade to `2.6.2` or later.","status":"open","published_at":"2026-11-13T17:17:30+00:00","first_seen_at":"2026-11-13T17:48:01+00:00","triaged_at":"2026-11-13T17:49:02+00:00","updated_at":"2026-11-13T17:49:02+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-11-13T17:49:02Z","model":"claude-haiku-5-5","output":{"fix":"- Gameyfin: upgrade to `2.6.2` or later.","reach":"internet","title":"Gameyfin: missing authorization lets anonymous users read library data","impact":"medium","summary":"Gameyfin, a self-hosted game library manager, has a missing authorization check on Hilla endpoints marked AnonymousAllowed. An unauthenticated attacker can bypass login-required mode and read game catalog metadata, libraries, platforms, plugins and game requests.","audience":"businesses","category":"other","nicknames":[],"who_cares":["gameyfin","self-hosted","java","hilla"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Unauthenticated users read library metadata, platforms, plugins and requests","analyst_note":"","how_to_check":"- Check the Gameyfin version: anything below `2.6.2` is affected.\n- Confirm whether login-required mode is enabled; the bypass only matters when it is.","plain_action":"","product_name":"Gameyfin","needs_analyst":false,"not_affected_if":["login-not-required-mode","gameyfin-2.6.2-or-later"],"who_is_affected":"Any Gameyfin instance before `2.6.2` that runs with login-required mode enabled is exposed, because unauthenticated requests to synchronous Hilla endpoints such as GameEndpoint.sync are not checked. Instances with login-required mode off have no login to bypass, and the data read is catalog metadata, not credentials.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.001344,"input_tokens":4660,"output_tokens":1757,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-129131':12A,15A '-2026':11A,14A '2.6.2':64C 'allow':71C 'annot':84C 'anonym':5A 'anonymousallow':41B,86C 'attack':44B,73C,87C 'author':3A,35B,68C 'bypass':46B,75C 'call':81C 'catalog':54B,104C 'check':36B,100C 'contain':65C 'cve':10A,13A 'data':9A 'endpoint':39B,83C,92C 'game':29B,53B,60B,103C,110C 'gameendpoint.sync':96C 'gameyfin':1A,16A,17B,24B,62C 'hilla':18B,38B,82C 'host':23B,28B 'java':19B 'let':4A 'librari':8A,30B,56B,106C 'livesubscriptionsecur':98C 'login':48B,77C 'login-requir':47B,76C 'manag':31B 'mark':40B 'metadata':55B,105C 'method':93C 'miss':2A,34B,67C 'mode':50B,79C 'never':99C 'platform':57B,107C 'plugin':58B,108C 'post':89C 'read':7A,52B 'request':61B,111C 'requir':49B,78C 'retriev':102C 'self':22B,27B 'self-host':21B,26B 'synchron':91C 'unauthent':43B,72C 'user':6A 'vulner':69C","nicknames":[],"mitigations":[],"who_affected":"Any Gameyfin instance before `2.6.2` that runs with login-required mode enabled is exposed, because unauthenticated requests to synchronous Hilla endpoints such as GameEndpoint.sync are not checked. Instances with login-required mode off have no login to bypass, and the data read is catalog metadata, not credentials.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["gameyfin"],"ptokens":["gameyfin"],"labels":["gameyfin","hilla","java","medium","other","selfhosted","vendor"],"campaign_type":null,"search_a":"'-129131':12A,15A '-2026':11A,14A 'anonym':5A 'author':3A 'cve':10A,13A 'data':9A 'gameyfin':1A,16A 'let':4A 'librari':8A 'miss':2A 'read':7A 'user':6A","search_b":"'anonymousallow':41B 'attack':44B 'author':35B 'bypass':46B 'catalog':54B 'check':36B 'endpoint':39B 'game':29B,53B,60B 'gameyfin':17B,24B 'hilla':18B,38B 'host':23B,28B 'java':19B 'librari':30B,56B 'login':48B 'login-requir':47B 'manag':31B 'mark':40B 'metadata':55B 'miss':34B 'mode':50B 'platform':57B 'plugin':58B 'read':52B 'request':61B 'requir':49B 'self':22B,27B 'self-host':21B,26B 'unauthent':43B","search_c":"'2.6.2':64C 'allow':71C 'annot':84C 'anonymousallow':86C 'attack':73C,87C 'author':68C 'bypass':75C 'call':81C 'catalog':104C 'check':100C 'contain':65C 'endpoint':83C,92C 'game':103C,110C 'gameendpoint.sync':96C 'gameyfin':62C 'hilla':82C 'librari':106C 'livesubscriptionsecur':98C 'login':77C 'login-requir':76C 'metadata':105C 'method':93C 'miss':67C 'mode':79C 'never':99C 'platform':107C 'plugin':108C 'post':89C 'request':111C 'requir':78C 'retriev':102C 'synchron':91C 'unauthent':72C 'vulner':69C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-13T17:17:30+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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-2026-129131","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129131","severity":null,"published_at":"2026-11-13T17:17:30+00:00","modified_at":"2026-11-13T17:17:30+00:00","first_seen_at":"2026-11-13T17:48:01+00:00","fetched_at":"2026-11-13T17:48:01+00:00","note":null}],"documents":[{"id":148134,"url":"https://github.com/gameyfin/gameyfin/commit/2515f1693c88bfa8145882fd85b790638738032c","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":148135,"url":"https://github.com/gameyfin/gameyfin/releases/tag/v2.6.2","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"},{"id":148136,"url":"https://www.vulncheck.com/advisories/gameyfin-before-2.6.2-missing-authorization-in-hilla-endpoints","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}