{"cve":"CVE-2026-54560","nvd":{"published":"2026-07-15T15:16:44.840","modified":"2026-07-15T18:15:13.373","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","score":7.6},"cwes":["CWE-863"],"references":["https://github.com/cloudreve/cloudreve/commit/ed20843dc3df20a25fcaf6b538647e11c4d68d87","https://github.com/cloudreve/cloudreve/releases/tag/4.16.1","https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8","https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:45:36.895656543+00:00"},"epss":{"cve":"CVE-2026-54560","score":0.00582,"percentile":0.47806,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vgj4-345g-jcf8","url":"https://osv.dev/vulnerability/GHSA-vgj4-345g-jcf8","summary":"Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim","modified":"2026-07-22T21:11:20.480991863Z","packages":[{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","ranges":[">=4.0.0-20260114075425-bc6845bd742c <4.0.0-20260606015557-ed20843dc3df"],"fixed":["4.0.0-20260606015557-ed20843dc3df"]}]},{"id":"GO-2026-6022","url":"https://osv.dev/vulnerability/GO-2026-6022","summary":"Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim in github.com/cloudreve/Cloudreve","modified":"2026-07-22T21:00:25.559181010Z","packages":[{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve","purl":"pkg:golang/github.com/cloudreve/Cloudreve","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","ranges":[">=4.0.0-20260114075425-bc6845bd742c <4.0.0-20260606015557-ed20843dc3df"],"fixed":["4.0.0-20260606015557-ed20843dc3df"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}