{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-51584", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-08-11T13:53:12.288Z", "dateReserved": "2026-06-08T00:00:00.000Z", "datePublished": "2026-08-11T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-08-11T13:53:12.288Z"}, "descriptions": [{"lang": "en", "value": "An issue in usememos v0.27.1 allows a remote attacker to achieve account takeover via the ssoCredentials branch of the SignIn handler in server/router/api/v1/auth_service.go, because SSO identity is matched only on an attacker-controllable identifier without binding to the IdP's stable subject claim."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/usememos/memos"}, {"url": "https://gist.github.com/seiyaibuki0523/33a4c06eb7d10914e5e5152ecd5100ec"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue in usememos v0.27.1 allows a remote attacker to achieve account takeover via the ssoCredentials branch of the SignIn handler in server/router/api/v1/auth_service.go, because SSO identity is matched only on an attacker-controllable identifier without binding to the IdP's stable subject claim."}], "id": "CVE-2026-51584", "lastModified": "2026-08-11T14:17:14.463", "metrics": {}, "published": "2026-08-11T14:17:14.463", "references": [{"source": "cve@mitre.org", "url": "https://gist.github.com/seiyaibuki0523/33a4c06eb7d10914e5e5152ecd5100ec"}, {"source": "cve@mitre.org", "url": "https://github.com/usememos/memos"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.27.1"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "memos", "vendor": "usememos"}], "created": "2026-08-12T00:00:03.676728+00:00", "title": "SSO Account Takeover via Unbound Identifier in usememos SignIn Handler", "updated": "2026-08-12T00:15:12.315733+00:00", "vendors": ["usememos", "usememos$PRODUCT$memos"], "weaknesses": ["CWE-306", "CWE-285"]}