{"id":"CVE-2026-123330","kind":"vulnerability","aliases":["CVE-2026-123330"],"related":[],"title":"JetBrains YouTrack: read-only users could change issue visibility settings","description":"In JetBrains YouTrack before 2026.2.19562 missing authorization allowed users with read-only access to change issue visibility settings","summary":"In JetBrains YouTrack before 2026.2.19562, a missing authorization check let users with read-only access change issue visibility settings. An attacker with a read-only account could alter who can see issues they should not be able to change.","severity":"medium","cvss":5.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["jetbrains","runtime","self-hosted","youtrack"],"not_affected_if":["managed-hosting","no-read-only-users"],"how_to_check":"- Check the installed YouTrack version in the admin panel or with the server's version page; if it is below `2026.2.19562`, the instance is in range.\n- Review whether read-only accounts exist on the instance, since they are the only users this flaw needs.","fix":"- JetBrains YouTrack: upgrade to `2026.2.19562` or later.","status":"open","published_at":"2026-11-06T11:17:13+00:00","first_seen_at":"2026-11-06T11:41:28+00:00","triaged_at":"2026-11-06T11:42:28+00:00","updated_at":"2026-11-06T11:42:28+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-06T11:42:28Z","model":"claude-haiku-5-5","output":{"fix":"- JetBrains YouTrack: upgrade to `2026.2.19562` or later.","reach":"network","title":"JetBrains YouTrack: read-only users could change issue visibility settings","impact":"medium","summary":"In JetBrains YouTrack before 2026.2.19562, a missing authorization check let users with read-only access change issue visibility settings. An attacker with a read-only account could alter who can see issues they should not be able to change.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["youtrack","self-hosted","jetbrains"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"read-only user changes issue visibility, exposing restricted issues","analyst_note":"","how_to_check":"- Check the installed YouTrack version in the admin panel or with the server's version page; if it is below `2026.2.19562`, the instance is in range.\n- Review whether read-only accounts exist on the instance, since they are the only users this flaw needs.","plain_action":"","needs_analyst":false,"not_affected_if":["managed-hosting","no-read-only-users"],"who_is_affected":"Teams that self-host YouTrack before 2026.2.19562 and have users with read-only access. The flaw lets such a user change issue visibility, so any instance with only full-access users is less exposed. Hosted YouTrack from JetBrains is handled by the vendor.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00068,"input_tokens":4172,"output_tokens":525,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123330':14A,17A '-2026':13A,16A '2026.2.19562':28B,69C 'abl':62B 'access':39B,78C 'account':51B 'allow':72C 'alter':53B 'attack':45B 'author':31B,71C 'chang':8A,40B,64B,80C 'check':32B 'could':7A,52B 'cve':12A,15A 'host':22B 'issu':9A,41B,57B,81C 'jetbrain':1A,18B,25B,66C 'let':33B 'miss':30B,70C 'read':4A,37B,49B,76C 'read-on':3A,36B,48B,75C 'runtim':19B 'see':56B 'self':21B 'self-host':20B 'set':11A,43B,83C 'user':6A,34B,73C 'visibl':10A,42B,82C 'youtrack':2A,23B,26B,67C","nicknames":[],"mitigations":[],"who_affected":"Teams that self-host YouTrack before 2026.2.19562 and have users with read-only access. The flaw lets such a user change issue visibility, so any instance with only full-access users is less exposed. Hosted YouTrack from JetBrains is handled by the vendor.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["jetbrains","medium","runtime","selfhosted","youtrack"],"campaign_type":null,"search_a":"'-123330':14A,17A '-2026':13A,16A 'chang':8A 'could':7A 'cve':12A,15A 'issu':9A 'jetbrain':1A 'read':4A 'read-on':3A 'set':11A 'user':6A 'visibl':10A 'youtrack':2A","search_b":"'2026.2.19562':28B 'abl':62B 'access':39B 'account':51B 'alter':53B 'attack':45B 'author':31B 'chang':40B,64B 'check':32B 'could':52B 'host':22B 'issu':41B,57B 'jetbrain':18B,25B 'let':33B 'miss':30B 'read':37B,49B 'read-on':36B,48B 'runtim':19B 'see':56B 'self':21B 'self-host':20B 'set':43B 'user':34B 'visibl':42B 'youtrack':23B,26B","search_c":"'2026.2.19562':69C 'access':78C 'allow':72C 'author':71C 'chang':80C 'issu':81C 'jetbrain':66C 'miss':70C 'read':76C 'read-on':75C 'set':83C 'user':73C 'visibl':82C 'youtrack':67C","first_public_at":"2026-11-06T11:17:13+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cvss_by":"cve@jetbrains.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123330","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123330","severity":null,"published_at":"2026-11-06T11:17:13+00:00","modified_at":"2026-11-06T11:17:13+00:00","first_seen_at":"2026-11-06T11:41:28+00:00","fetched_at":"2026-11-06T11:41:28+00:00","note":null}],"documents":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}