{"cve":"CVE-2025-31124","nvd":{"published":"2025-03-31T20:15:15.707","modified":"2026-06-17T09:09:53.930","status":"Analyzed","description":"Zitadel is open-source identity infrastructure software. ZITADEL administrators can enable a setting called \"Ignoring unknown usernames\" which helps mitigate attacks that try to guess/enumerate usernames. If enabled, ZITADEL will show the password prompt even if the user doesn't exist and report \"Username or Password invalid\". While the setting was correctly respected during the login flow, the user's username was normalized leading to a disclosure of the user's existence. This vulnerability is fixed in 2.71.6, 2.70.8, 2.69.9, 2.68.9, 2.67.13, 2.66.16, 2.65.7, 2.64.6, and 2.63.9.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-200","CWE-203","CWE-204"],"references":["https://github.com/zitadel/zitadel/commit/14de8ecac2afafee4975ed7ac26f3ca4a2b0f82c","https://github.com/zitadel/zitadel/releases/tag/v2.63.9","https://github.com/zitadel/zitadel/releases/tag/v2.64.6","https://github.com/zitadel/zitadel/releases/tag/v2.65.7","https://github.com/zitadel/zitadel/releases/tag/v2.66.16"],"products":["zitadel:zitadel"],"source":"nvd","synced_at":"2026-10-19T22:00:28.034033815+00:00"},"epss":{"cve":"CVE-2025-31124","score":0.00527,"percentile":0.44679,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}