{"id":"CVE-2026-126159","kind":"vulnerability","aliases":["CVE-2026-126159"],"related":[],"title":"Fortinet FortiMail: unauthenticated attacker can release or delete other users' quarantined mail","description":"A authorization bypass through user-controlled key vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an unauthenticated attacker to release or delete quarantined messages for arbitrary mailboxes via a crafted quarantine release request.","summary":"FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, and all of 7.2 let an unauthenticated attacker send a crafted quarantine release request. The attacker can release or delete quarantined messages belonging to arbitrary mailboxes.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["email-gateway","fortimail","fortinet","infrastructure"],"not_affected_if":["version-outside-range"],"how_to_check":"- Check the FortiMail firmware version in the admin GUI or with `get system status` on the CLI, and compare it with the affected ranges.\n- Confirm whether the quarantine release interface is reachable from the internet.","fix":"- FortiMail 8.0.0 through 8.0.1: unknown\n- FortiMail 7.6.0 through 7.6.6: unknown\n- FortiMail 7.4.0 through 7.4.8: unknown\n- FortiMail 7.2 (all versions): unknown","status":"open","published_at":"2026-11-11T22:17:13+00:00","first_seen_at":"2026-11-11T22:29:28+00:00","triaged_at":"2026-11-11T22:33:05+00:00","updated_at":"2026-11-11T22:33:05+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-11-11T22:33:05Z","model":"claude-haiku-5-5","output":{"fix":"- FortiMail 8.0.0 through 8.0.1: unknown\n- FortiMail 7.6.0 through 7.6.6: unknown\n- FortiMail 7.4.0 through 7.4.8: unknown\n- FortiMail 7.2 (all versions): unknown","reach":"internet","title":"Fortinet FortiMail: unauthenticated attacker can release or delete other users' quarantined mail","impact":"medium","summary":"FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, and all of 7.2 let an unauthenticated attacker send a crafted quarantine release request. The attacker can release or delete quarantined messages belonging to arbitrary mailboxes.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["fortimail","email-gateway","fortinet"],"confidence":0.7,"fix_status":"unknown","needs_auth":"no","worst_case":"Attacker deletes or releases quarantined mail for any mailbox","analyst_note":"Find Fortinet's PSIRT advisory for this CVE to confirm fixed versions, the affected interface, and whether exposure needs a non-default setting.","how_to_check":"- Check the FortiMail firmware version in the admin GUI or with `get system status` on the CLI, and compare it with the affected ranges.\n- Confirm whether the quarantine release interface is reachable from the internet.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["version-outside-range"],"who_is_affected":"Organizations running a FortiMail email gateway in the affected version ranges, where the quarantine interface is reachable by an attacker. The sources do not state whether a non-default setting is required, so the exposure of appliances behind a private network is unknown. Teams on other FortiMail versions or without FortiMail can skip it.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00081,"input_tokens":4606,"output_tokens":698,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-126159':15A,18A '-2026':14A,17A '7.2':38B,85C '7.4.0':32B,81C '7.4.8':34B,83C '7.6.0':29B,77C '7.6.6':31B,79C '8.0.0':26B,73C '8.0.1':28B,75C 'allow':89C 'arbitrari':59B,100C 'attack':4A,42B,50B,92C 'author':62C 'belong':57B 'bypass':63C 'control':67C 'craft':45B,104C 'cve':13A,16A 'delet':8A,54B,96C 'email':20B 'email-gateway':19B 'fortimail':2A,22B,25B,72C,76C,80C,84C 'fortinet':1A,23B,71C 'gateway':21B 'infrastructur':24B 'key':68C 'let':39B 'mail':12A 'mailbox':60B,101C 'may':88C 'messag':56B,98C 'quarantin':11A,46B,55B,97C,105C 'releas':6A,47B,52B,94C,106C 'request':48B,107C 'send':43B 'unauthent':3A,41B,91C 'user':10A,66C 'user-control':65C 'version':87C 'via':102C 'vulner':69C","nicknames":[],"mitigations":[],"who_affected":"Organizations running a FortiMail email gateway in the affected version ranges, where the quarantine interface is reachable by an attacker. The sources do not state whether a non-default setting is required, so the exposure of appliances behind a private network is unknown. Teams on other FortiMail versions or without FortiMail can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["emailgateway","fortimail","fortinet","high","infrastructure"],"campaign_type":null,"search_a":"'-126159':15A,18A '-2026':14A,17A 'attack':4A 'cve':13A,16A 'delet':8A 'fortimail':2A 'fortinet':1A 'mail':12A 'quarantin':11A 'releas':6A 'unauthent':3A 'user':10A","search_b":"'7.2':38B '7.4.0':32B '7.4.8':34B '7.6.0':29B '7.6.6':31B '8.0.0':26B '8.0.1':28B 'arbitrari':59B 'attack':42B,50B 'belong':57B 'craft':45B 'delet':54B 'email':20B 'email-gateway':19B 'fortimail':22B,25B 'fortinet':23B 'gateway':21B 'infrastructur':24B 'let':39B 'mailbox':60B 'messag':56B 'quarantin':46B,55B 'releas':47B,52B 'request':48B 'send':43B 'unauthent':41B","search_c":"'7.2':85C '7.4.0':81C '7.4.8':83C '7.6.0':77C '7.6.6':79C '8.0.0':73C '8.0.1':75C 'allow':89C 'arbitrari':100C 'attack':92C 'author':62C 'bypass':63C 'control':67C 'craft':104C 'delet':96C 'fortimail':72C,76C,80C,84C 'fortinet':71C 'key':68C 'mailbox':101C 'may':88C 'messag':98C 'quarantin':97C,105C 'releas':94C,106C 'request':107C 'unauthent':91C 'user':66C 'user-control':65C 'version':87C 'via':102C 'vulner':69C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T22:17:13+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cvss_by":"psirt@fortinet.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126159","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126159","severity":null,"published_at":"2026-11-11T22:17:13+00:00","modified_at":"2026-11-11T22:17:13+00:00","first_seen_at":"2026-11-11T22:29:28+00:00","fetched_at":"2026-11-11T22:29:28+00:00","note":null}],"documents":[],"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"}