{"id":"CVE-2026-72588","aliases":["EUVD-2026-55218","GHSA-cjr5-m69m-f39c"],"status":"published","title":"bluewave-labs Checkmate - User Enumeration via Differential HTTP Response in Password Recovery","description":"A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0042,"percentile":0.36775,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-204"],"published":"2026-08-10T10:41:39Z","modified":"2026-10-24T15:10:00Z","products":[{"vendor":"bluewave-labs","product":"checkmate"}],"references":[{"url":"https://github.com/bluewave-labs/Checkmate","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72588"},{"url":"https://github.com/advisories/GHSA-cjr5-m69m-f39c"}],"sources":{"cve":[{"id":"CVE-2026-72588","title":"bluewave-labs Checkmate - User Enumeration via Differential HTTP Response in Password Recovery","description":"A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.","status":"published","published":"2026-08-10T10:41:39.341Z","modified":"2026-08-10T13:22:16.638Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-204"],"updated_at":"2026-11-02T14:19:52.016971Z"}],"euvd":[{"id":"EUVD-2026-55218","description":"A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.","status":"published","published":"2026-08-10T10:41:39Z","modified":"2026-08-10T13:22:16Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:02:05.388264Z"}],"ghsa":[{"id":"GHSA-cjr5-m69m-f39c","title":"A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an...","description":"A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.","status":"published","published":"2026-08-10T12:31:53Z","modified":"2026-08-10T12:32:01Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-204"],"updated_at":"2026-11-02T15:10:13.54571Z"}],"nvd":[{"id":"CVE-2026-72588","description":"A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.","status":"published","published":"2026-08-10T11:17:31.88Z","modified":"2026-10-24T15:10:00.19Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-204"],"updated_at":"2026-11-02T14:12:35.743275Z"}]}}