{"id":"CVE-2026-123298","kind":"vulnerability","aliases":["CVE-2026-123298"],"related":[],"title":"JetBrains Hub: SMTP command injection through email verification flow","description":"In JetBrains Hub before 2026.2.52556 sMTP command injection via email verification was possible","summary":"JetBrains Hub before 2026.2.52556 let an attacker inject SMTP commands through the email verification feature. The sources do not say what the injected commands can reach beyond the mail server.","severity":"medium","cvss":5.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["jetbrains-hub","package","self-hosted"],"not_affected_if":["hub-2026.2.52556-or-later"],"how_to_check":"- Check the installed Hub version in the Hub admin panel or its about page; `unknown` for the exact location in the sources.\n- Confirm whether email verification is enabled in Hub's settings; `unknown` for the exact setting name.","fix":"- JetBrains Hub: move to `2026.2.52556` or later","status":"open","published_at":"2026-11-06T11:17:08+00:00","first_seen_at":"2026-11-06T11:41:25+00:00","triaged_at":"2026-11-06T11:42:35+00:00","updated_at":"2026-11-06T11:42:35+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-06T11:42:35Z","model":"claude-haiku-5-5","output":{"fix":"- JetBrains Hub: move to `2026.2.52556` or later","reach":"unknown","title":"JetBrains Hub: SMTP command injection through email verification flow","impact":"medium","summary":"JetBrains Hub before 2026.2.52556 let an attacker inject SMTP commands through the email verification feature. The sources do not say what the injected commands can reach beyond the mail server.","audience":"businesses","category":"package","nicknames":[],"who_cares":["jetbrains-hub","self-hosted"],"confidence":0.6,"fix_status":"available","needs_auth":"unknown","worst_case":"attacker injects SMTP commands into the mail server connection","analyst_note":"","how_to_check":"- Check the installed Hub version in the Hub admin panel or its about page; `unknown` for the exact location in the sources.\n- Confirm whether email verification is enabled in Hub's settings; `unknown` for the exact setting name.","plain_action":"","needs_analyst":false,"not_affected_if":["hub-2026.2.52556-or-later"],"who_is_affected":"JetBrains Hub instances earlier than 2026.2.52556 that send email verification messages. Sources do not say whether the flaw needs an account or a particular configuration to be reachable.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000654,"input_tokens":4154,"output_tokens":477,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123298':12A,15A '-2026':11A,14A '2026.2.52556':26B,57C 'attack':29B 'beyond':49B 'command':4A,32B,46B,59C 'cve':10A,13A 'email':7A,35B,62C 'featur':37B 'flow':9A 'host':22B 'hub':2A,18B,24B,55C 'inject':5A,30B,45B,60C 'jetbrain':1A,17B,23B,54C 'jetbrains-hub':16B 'let':27B 'mail':51B 'packag':19B 'possibl':65C 'reach':48B 'say':42B 'self':21B 'self-host':20B 'server':52B 'smtp':3A,31B,58C 'sourc':39B 'verif':8A,36B,63C 'via':61C","nicknames":[],"mitigations":[],"who_affected":"JetBrains Hub instances earlier than 2026.2.52556 that send email verification messages. Sources do not say whether the flaw needs an account or a particular configuration to be reachable.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["jetbrainshub","medium","package","selfhosted"],"campaign_type":null,"search_a":"'-123298':12A,15A '-2026':11A,14A 'command':4A 'cve':10A,13A 'email':7A 'flow':9A 'hub':2A 'inject':5A 'jetbrain':1A 'smtp':3A 'verif':8A","search_b":"'2026.2.52556':26B 'attack':29B 'beyond':49B 'command':32B,46B 'email':35B 'featur':37B 'host':22B 'hub':18B,24B 'inject':30B,45B 'jetbrain':17B,23B 'jetbrains-hub':16B 'let':27B 'mail':51B 'packag':19B 'reach':48B 'say':42B 'self':21B 'self-host':20B 'server':52B 'smtp':31B 'sourc':39B 'verif':36B","search_c":"'2026.2.52556':57C 'command':59C 'email':62C 'hub':55C 'inject':60C 'jetbrain':54C 'possibl':65C 'smtp':58C 'verif':63C 'via':61C","first_public_at":"2026-11-06T11:17:08+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N","cvss_by":"cve@jetbrains.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123298","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123298","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"}