{"schemaVersion":3,"id":"CVE-2026-54560","aliases":["GHSA-vgj4-345g-jcf8","GO-2026-6022"],"status":"published","duplicateOf":null,"title":null,"description":"Cloudreve is a self-hosted file management and sharing system. From 4.12.0 until 4.16.1, Cloudreve's OAuth access tokens are issued without the OAuth client_id claim, so the JWT verifier does not load token scopes into request context and RequiredScopes treats the request like non-scoped session authentication, allowing a low-scope OAuth access token to call APIs requiring higher scopes such as file, share, workflow, user setting, WebDAV account, and potentially admin scopes. This issue is fixed in version 4.16.1.","dates":{"published":"2026-07-15T14:40:24.765Z","modified":"2026-07-15T15:16:35.699Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.6,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":7.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","exploitability":5.4,"impact":9.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00463,"percentile":0.39086,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00463},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00463,"percentile":0.39086}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00463,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00463,"percentile":0.39086}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-863","name":"Incorrect Authorization","description":"The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/863.html"}],"affected":[{"vendor":"cloudreve","product":"cloudreve","name":"cloudreve","label":"cloudreve","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 4.12.0, < 4.16.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.12.0, < 4.16.1","eol":null,"hubHref":"/vendor/cloudreve/cloudreve"},{"vendor":"github.com/cloudreve","product":"Cloudreve","name":"github.com/cloudreve/Cloudreve","label":"Cloudreve","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/cloudreve/Cloudreve","purlType":"golang","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/cloudreve/Cloudreve","product":"v3","name":"github.com/cloudreve/Cloudreve/v3","label":"v3","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","purlType":"golang","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/cloudreve/Cloudreve","product":"v4","name":"github.com/cloudreve/Cloudreve/v4","label":"v4","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","purlType":"golang","versions":[{"text":"≥ 4.0.0-20260114075425-bc6845bd742c, < 4.0.0-20260606015557-ed20843dc3df","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.0.0-20260114075425-bc6845bd742c, < 4.0.0-20260606015557-ed20843dc3df","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8","label":"github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory"]},{"url":"https://github.com/cloudreve/cloudreve/commit/ed20843dc3df20a25fcaf6b538647e11c4d68d87","label":"github.com/cloudreve/cloudreve/commit/ed20843dc3df20a25fcaf6b538647e11c4d68d87","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/cloudreve/cloudreve/releases/tag/4.16.1","label":"github.com/cloudreve/cloudreve/releases/tag/4.16.1","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54560","label":"nvd.nist.gov/vuln/detail/CVE-2026-54560","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/cloudreve/cloudreve","label":"github.com/cloudreve/cloudreve","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:21483-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:21483-1"]},"timeline":[{"kind":"published","date":"2026-07-15T14:40:24.765Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-15T15:16:35.699Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T11:55:40.134Z","stale":false,"partial":false}}