{"cve":"CVE-2026-55502","nvd":{"published":"2026-07-31T04:17:23.563","modified":"2026-09-08T20:51:43.490","status":"Deferred","description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, POST /api/v4/admin/policy/oauth/signin requires only Admin.Read even though GetOauthRedirectService persists caller-supplied OneDrive secret and app_id values, allowing an OAuth token without Admin.Write to modify storage policy credentials. The route is inside the admin group that requires Admin.Read, but it does not add the local Admin.Write guard used by sibling policy mutation routes. Its handler persists attacker-supplied secret and app_id values into the selected OneDrive storage policy before returning an OAuth URL. This issue is fixed in version 4.17.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","score":7.1},"cwes":["CWE-863"],"references":["https://github.com/cloudreve/cloudreve/security/advisories/GHSA-hq88-5x99-x3gf","https://github.com/cloudreve/cloudreve/security/advisories/GHSA-hq88-5x99-x3gf"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-55502","score":0.00338,"percentile":0.2731,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hq88-5x99-x3gf","url":"https://osv.dev/vulnerability/GHSA-hq88-5x99-x3gf","summary":"Cloudreve OAuth Admin.Read scope can update OneDrive storage policy credentials","modified":"2026-08-18T15:10:34.688472833Z","packages":[{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","ranges":["<4.17.0"],"fixed":["4.17.0"]},{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","ranges":["<=3.0.0-20250225100611-da4e44b77af4"],"fixed":[]}]},{"id":"GO-2026-6101","url":"https://osv.dev/vulnerability/GO-2026-6101","summary":"Cloudreve OAuth Admin.Read scope can update OneDrive storage policy credentials in github.com/cloudreve/Cloudreve","modified":"2026-08-18T15:00:19.848923844Z","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":["all versions"],"fixed":[]}]}],"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."]}