{"id":"CVE-2026-114551","kind":"vulnerability","aliases":["CVE-2026-114551"],"related":[],"title":"MailEnable: mailbox credentials stored in plaintext, readable remotely","description":"MailEnable Auth Cleartext Storage Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of MailEnable. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of mailbox credentials. The issue results from storing sensitive information in plaintext. An attacker can leverage this in conjunction with other vulnerabilities to disclose stored credentials, leading to further compromise. Was ZDI-CAN-34478.","summary":"MailEnable stores mailbox credentials in plaintext on affected installations. A remote attacker without an account can disclose those stored credentials, and can combine this with other flaws to take further control.","severity":"medium","cvss":5.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["email","mailenable","other","self-hosted"],"not_affected_if":["unknown"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-04T00:17:22+00:00","first_seen_at":"2026-11-04T00:46:15+00:00","triaged_at":"2026-11-04T00:47:58+00:00","updated_at":"2026-11-04T00:47:58+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-04T00:47:58Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"MailEnable: mailbox credentials stored in plaintext, readable remotely","impact":"medium","summary":"MailEnable stores mailbox credentials in plaintext on affected installations. A remote attacker without an account can disclose those stored credentials, and can combine this with other flaws to take further control.","audience":"businesses","category":"other","nicknames":[],"who_cares":["mailenable","self-hosted","email"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"stored mailbox credentials disclosed remotely, enabling further compromise","analyst_note":"Find affected MailEnable versions and the fixed release at https://nvd.nist.gov/vuln/detail/CVE-2026-114551 or the ZDI advisory for ZDI-CAN-34478.","how_to_check":"unknown","plain_action":"","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Organizations running MailEnable mail server installations that store mailbox credentials. The sources do not give the affected versions or the exact configuration that exposes the stored credentials, so the exposure of any given install cannot be confirmed from them.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000649,"input_tokens":4194,"output_tokens":460,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-114551':11A,14A '-2026':10A,13A '34478':122C 'account':35B 'affect':28B,69C 'allow':61C 'attack':32B,63C,101C 'auth':53C 'authent':73C 'cleartext':54C 'combin':43B 'compromis':117C 'conjunct':106C 'control':51B 'credenti':3A,24B,40B,90C,113C 'cve':9A,12A 'disclos':37B,65C,111C 'disclosur':57C 'email':15B 'exist':84C 'exploit':78C 'flaw':47B,83C 'handl':87C 'host':20B 'inform':56C,67C,97C 'instal':29B,70C 'issu':92C 'lead':114C 'leverag':103C 'mailbox':2A,23B,89C 'mailen':1A,16B,21B,52C,72C 'plaintext':6A,26B,99C 'readabl':7A 'remot':8A,31B,62C 'requir':76C 'result':93C 'self':19B 'self-host':18B 'sensit':66C,96C 'specif':82C 'storag':55C 'store':4A,22B,39B,95C,112C 'take':49B 'vulner':58C,60C,80C,109C 'within':85C 'without':33B 'zdi':120C 'zdi-can':119C","nicknames":[],"mitigations":[],"who_affected":"Organizations running MailEnable mail server installations that store mailbox credentials. The sources do not give the affected versions or the exact configuration that exposes the stored credentials, so the exposure of any given install cannot be confirmed from them.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["email","mailenable","medium","other","selfhosted"],"campaign_type":null,"first_public_at":"2026-11-04T00:17:22+00:00","kev":null,"cvss_vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_by":"zdi-disclosures@trendmicro.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-114551","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114551","severity":null,"published_at":"2026-11-04T00:17:22+00:00","modified_at":"2026-11-04T00:17:22+00:00","first_seen_at":"2026-11-04T00:46:15+00:00","fetched_at":"2026-11-04T00:46:15+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}