{"id":"CVE-2026-123300","kind":"vulnerability","aliases":["CVE-2026-123300"],"related":[],"title":"JetBrains Hub: read-only users could change auth group mappings","description":"In JetBrains Hub before 2026.2.52519 missing authorisation allowed users with read-only access to modify auth module group mappings","summary":"In JetBrains Hub before 2026.2.52519, missing authorisation let users with read-only access modify the authentication module's group mappings. An attacker with a read-only account could change which groups users are mapped into, possibly gaining more access than intended.","severity":"low","cvss":2.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["jetbrains-hub","other","self-hosted","sso"],"not_affected_if":["hub-2026.2.52519-or-later"],"how_to_check":"- Check the installed Hub version in the Hub administration page; the sources do not name a command.","fix":"- JetBrains Hub: `2026.2.52519`","status":"open","published_at":"2026-11-06T11:17:08+00:00","first_seen_at":"2026-11-06T11:41:25+00:00","triaged_at":"2026-11-06T11:43:55+00:00","updated_at":"2026-11-06T11:43:55+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-06T11:43:55Z","model":"claude-haiku-5-5","output":{"fix":"- JetBrains Hub: `2026.2.52519`\n- unknown","reach":"network","title":"JetBrains Hub: read-only users could change auth group mappings","impact":"medium","summary":"In JetBrains Hub before 2026.2.52519, missing authorisation let users with read-only access modify the authentication module's group mappings. An attacker with a read-only account could change which groups users are mapped into, possibly gaining more access than intended.","audience":"businesses","category":"other","nicknames":[],"who_cares":["jetbrains-hub","self-hosted","sso"],"confidence":0.6,"fix_status":"available","needs_auth":"yes","worst_case":"read-only account alters authentication group mappings, widening access","analyst_note":"","how_to_check":"- Check the installed Hub version in the Hub administration page; the sources do not name a command.\n- unknown","plain_action":"","needs_analyst":false,"not_affected_if":["hub-2026.2.52519-or-later"],"who_is_affected":"Teams that self-host JetBrains Hub for single sign-on and group-based access. Exposure depends on having read-only accounts that could reach the auth module settings; the sources do not say more. Teams on Hub 2026.2.52519 or later are not affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000653,"input_tokens":4172,"output_tokens":472,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-123300':14A,17A '-2026':13A,16A '2026.2.52519':30B,73C 'access':39B,66B,82C 'account':54B 'allow':76C 'attack':48B 'auth':9A,85C 'authent':42B 'authoris':32B,75C 'chang':8A,56B 'could':7A,55B 'cve':12A,15A 'gain':64B 'group':10A,45B,58B,87C 'host':24B 'hub':2A,20B,28B,71C 'intend':68B 'jetbrain':1A,19B,27B,70C 'jetbrains-hub':18B 'let':33B 'map':11A,46B,61B,88C 'miss':31B,74C 'modifi':40B,84C 'modul':43B,86C 'possibl':63B 'read':4A,37B,52B,80C 'read-on':3A,36B,51B,79C 'self':23B 'self-host':22B 'sso':25B 'user':6A,34B,59B,77C","nicknames":[],"mitigations":[],"who_affected":"Teams that self-host JetBrains Hub for single sign-on and group-based access. Exposure depends on having read-only accounts that could reach the auth module settings; the sources do not say more. Teams on Hub 2026.2.52519 or later are not affected.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["jetbrainshub","low","other","selfhosted","sso"],"campaign_type":null,"search_a":"'-123300':14A,17A '-2026':13A,16A 'auth':9A 'chang':8A 'could':7A 'cve':12A,15A 'group':10A 'hub':2A 'jetbrain':1A 'map':11A 'read':4A 'read-on':3A 'user':6A","search_b":"'2026.2.52519':30B 'access':39B,66B 'account':54B 'attack':48B 'authent':42B 'authoris':32B 'chang':56B 'could':55B 'gain':64B 'group':45B,58B 'host':24B 'hub':20B,28B 'intend':68B 'jetbrain':19B,27B 'jetbrains-hub':18B 'let':33B 'map':46B,61B 'miss':31B 'modifi':40B 'modul':43B 'possibl':63B 'read':37B,52B 'read-on':36B,51B 'self':23B 'self-host':22B 'sso':25B 'user':34B,59B","search_c":"'2026.2.52519':73C 'access':82C 'allow':76C 'auth':85C 'authoris':75C 'group':87C 'hub':71C 'jetbrain':70C 'map':88C 'miss':74C 'modifi':84C 'modul':86C 'read':80C 'read-on':79C 'user':77C","first_public_at":"2026-11-06T11:17:08+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","cvss_by":"cve@jetbrains.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123300","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123300","severity":null,"published_at":"2026-11-06T11:17:08+00:00","modified_at":"2026-11-06T11:17:08+00:00","first_seen_at":"2026-11-06T11:41:25+00:00","fetched_at":"2026-11-06T11:41:25+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"}