{"id":"CVE-2026-72588","state":"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.","publishedAt":"2026-08-10T10:41:39.341Z","updatedAt":"2026-08-10T13:22:16.638Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"TuranSec"},"assigner":"TuranSec","products":["bluewave-labs Checkmate"],"affected":[{"vendor":"bluewave-labs","product":"Checkmate","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.1.0","versionType":"semver"}]}],"references":["https://github.com/bluewave-labs/Checkmate"],"weaknesses":["CWE-204"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72588.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72588","state":"PUBLISHED","datePublished":"2026-08-10T10:41:39.341Z","dateUpdated":"2026-08-10T13:22:16.638Z","assignerShortName":"TuranSec","assignerOrgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateReserved":"2026-08-10T10:32:53.854Z"},"containers":{"cna":{"title":"bluewave-labs Checkmate - User Enumeration via Differential HTTP Response in Password Recovery","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"bluewave-labs","product":"Checkmate","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.1.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/bluewave-labs/Checkmate","name":"Product","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-204","lang":"en","type":"CWE","description":"CWE-204: Observable Response Discrepancy"}]}],"providerMetadata":{"shortName":"TuranSec","orgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateUpdated":"2026-08-10T10:57:15.318Z"},"credits":[{"lang":"en","value":"Kamron Rasuljonov","type":"finder"}],"timeline":[{"time":"2026-08-10T10:32:53.000Z","lang":"en","value":"CVE Reserved"},{"time":"2026-08-10T10:32:53.000Z","lang":"en","value":"Public Disclosure"}],"source":{"discovery":"EXTERNAL"},"datePublic":"2026-08-10T10:32:53.000Z"},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-10T13:22:07.396244Z","id":"CVE-2026-72588","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-10T13:22:16.638Z"}}]}}}