{"id":"CVE-2026-123324","kind":"vulnerability","aliases":["CVE-2026-123324"],"related":[],"title":"JetBrains YouTrack: shared mailbox message history leaks information to users","description":"In JetBrains YouTrack before 2026.2.19562 information disclosure via shared mailbox message history was possible","summary":"Before version 2026.2.19562, JetBrains YouTrack exposed information through the message history of shared mailboxes. The sources do not say exactly what data is disclosed or to whom.","severity":"high","cvss":7.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["jetbrains","package","self-hosted","youtrack"],"not_affected_if":["version-2026.2.19562-or-later"],"how_to_check":"- Check the installed YouTrack version in the admin panel or the server's build info; the sources do not say where it is shown.","fix":"- Move to YouTrack `2026.2.19562` or later.","status":"open","published_at":"2026-11-06T11:17:12+00:00","first_seen_at":"2026-11-06T11:41:27+00:00","triaged_at":"2026-11-06T11:42:03+00:00","updated_at":"2026-11-06T11:42:03+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-11-06T11:42:03Z","model":"claude-haiku-5-5","output":{"fix":"- Move to YouTrack `2026.2.19562` or later.","reach":"unknown","title":"JetBrains YouTrack: shared mailbox message history leaks information to users","impact":"medium","summary":"Before version 2026.2.19562, JetBrains YouTrack exposed information through the message history of shared mailboxes. The sources do not say exactly what data is disclosed or to whom.","audience":"businesses","category":"package","nicknames":[],"who_cares":["youtrack","jetbrains","self-hosted"],"confidence":0.5,"fix_status":"available","needs_auth":"unknown","worst_case":"users read message history from shared mailboxes they should not see","analyst_note":"Check the JetBrains YouTrack release notes or security advisory for the attack preconditions, required privileges and the exact data exposed.","how_to_check":"- Check the installed YouTrack version in the admin panel or the server's build info; the sources do not say where it is shown.\n- unknown","plain_action":"","needs_analyst":true,"not_affected_if":["version-2026.2.19562-or-later"],"who_is_affected":"YouTrack instances running a version before 2026.2.19562 that use shared mailboxes. The sources do not describe further conditions, so whether a given instance is exposed is unknown.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000658,"input_tokens":4163,"output_tokens":484,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-123324':13A,16A '-2026':12A,15A '2026.2.19562':25B,51C 'cve':11A,14A 'data':44B 'disclos':46B 'disclosur':53C 'exact':42B 'expos':28B 'histori':6A,33B,58C 'host':21B 'inform':8A,29B,52C 'jetbrain':1A,17B,26B,48C 'leak':7A 'mailbox':4A,36B,56C 'messag':5A,32B,57C 'packag':18B 'possibl':60C 'say':41B 'self':20B 'self-host':19B 'share':3A,35B,55C 'sourc':38B 'user':10A 'version':24B 'via':54C 'youtrack':2A,22B,27B,49C","nicknames":[],"mitigations":[],"who_affected":"YouTrack instances running a version before 2026.2.19562 that use shared mailboxes. The sources do not describe further conditions, so whether a given instance is exposed is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","jetbrains","package","selfhosted","youtrack"],"campaign_type":null,"search_a":"'-123324':13A,16A '-2026':12A,15A 'cve':11A,14A 'histori':6A 'inform':8A 'jetbrain':1A 'leak':7A 'mailbox':4A 'messag':5A 'share':3A 'user':10A 'youtrack':2A","search_b":"'2026.2.19562':25B 'data':44B 'disclos':46B 'exact':42B 'expos':28B 'histori':33B 'host':21B 'inform':29B 'jetbrain':17B,26B 'mailbox':36B 'messag':32B 'packag':18B 'say':41B 'self':20B 'self-host':19B 'share':35B 'sourc':38B 'version':24B 'youtrack':22B,27B","search_c":"'2026.2.19562':51C 'disclosur':53C 'histori':58C 'inform':52C 'jetbrain':48C 'mailbox':56C 'messag':57C 'possibl':60C 'share':55C 'via':54C 'youtrack':49C","first_public_at":"2026-11-06T11:17:12+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cvss_by":"cve@jetbrains.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123324","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123324","severity":null,"published_at":"2026-11-06T11:17:12+00:00","modified_at":"2026-11-06T11:17:12+00:00","first_seen_at":"2026-11-06T11:41:27+00:00","fetched_at":"2026-11-06T11:41:27+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"}