{"id":"CVE-2026-77637","revision":"454eec57d08f4865a0bdd3175b41c16f","records":[{"revision":"454eec57d08f4865a0bdd3175b41c16f","observedAt":"2026-10-25T16:19:04.694+00:00","statement":{"source":"nvd","id":"CVE-2026-77637","aliases":[],"title":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET(\"wopi\") and tool.POST(\"mail\") in routers/router.go inherit ScopeAdminRead but omit the RequiredScopes(types.ScopeAdminWrite) middleware applied to neig…","description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET(\"wopi\") and tool.POST(\"mail\") in routers/router.go inherit ScopeAdminRead but omit the RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token's intended read-only authorization boundary. This issue is fixed in version 4.18.0.","state":0,"publishedAt":"2026-09-22T16:17:55.99+00:00","modifiedAt":"2026-09-22T18:17:19.553+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","score":3.8,"severity":"LOW"}],"references":["https://github.com/cloudreve/cloudreve/commit/bce08f88e9d8f881e78fd18e7a6598b31922c492","https://github.com/cloudreve/cloudreve/releases/tag/4.18.0","https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w89x-c962-c44g"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77637","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-862"],"productCriteria":[],"sourceDates":{"published":"2026-09-22T16:17:55.990","lastModified":"2026-09-22T18:17:19.553"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-77637","identifiers":["CVE-2026-77637"]},"retained":false,"historicalAffected":[]}],"coverage":[]}