{"schemaVersion":3,"id":"CVE-2023-44399","aliases":["GHSA-v683-rcxx-vpff"],"status":"published","duplicateOf":null,"title":null,"description":"ZITADEL provides identity infrastructure. In versions 2.37.2 and prior, ZITADEL administrators can enable a setting called \"Ignoring unknown usernames\" which helps mitigate attacks that try to guess/enumerate usernames. While this settings was properly working during the authentication process it did not work correctly on the password reset flow. This meant that even if this feature was active that an attacker could use the password reset function to verify if an account exist within ZITADEL. This bug has been patched in versions 2.37.3 and 2.38.0. No known workarounds are available.","dates":{"published":"2023-10-10T16:55:45.309Z","modified":"2024-09-19T14:18:10.146Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00665,"percentile":0.5116,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.13299999999999995,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00532},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00665,"percentile":0.5116}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00532,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00665,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00665,"percentile":0.5116}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-640","name":"Weak Password Recovery Mechanism for Forgotten Password","description":"The product contains a mechanism for users to recover or change their passwords without knowing the original password, but the mechanism is weak.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/640.html"}],"affected":[{"vendor":"github.com/zitadel","product":"zitadel","name":"github.com/zitadel/zitadel","label":"zitadel","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/zitadel/zitadel","purlType":"golang","versions":[{"text":"< 2.37.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.37.3","eol":null,"hubHref":null},{"vendor":"zitadel","product":"zitadel","name":"zitadel","label":"zitadel","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.37.3","noFixRecorded":false,"fixedIn":null},{"text":"≤ 2.37.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.37.3 | ≤ 2.37.2","eol":null,"hubHref":"/vendor/zitadel/zitadel"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-v683-rcxx-vpff","label":"github.com/zitadel/zitadel/security/advisories/GHSA-v683-rcxx-vpff","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Vendor Advisory"]},{"url":"https://github.com/zitadel/zitadel/releases/tag/v2.37.3","label":"github.com/zitadel/zitadel/releases/tag/v2.37.3","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://github.com/zitadel/zitadel/releases/tag/v2.38.0","label":"github.com/zitadel/zitadel/releases/tag/v2.38.0","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-44399","label":"nvd.nist.gov/vuln/detail/CVE-2023-44399","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/zitadel/zitadel","label":"github.com/zitadel/zitadel","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-10-10T16:55:45.309Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-19T14:18:10.146Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T13:10:06.170Z","stale":false,"partial":false}}