CVSS 3.1
7.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:LCVE-2026-55502
High (7.1). EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/cloudreve/Cloudreve/v4 4.17.0.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hq88-5x99-x3gf | Go | github.com/cloudreve/Cloudreve/v4 | <4.17.0 | 4.17.0 |
| GHSA-hq88-5x99-x3gf | Go | github.com/cloudreve/Cloudreve/v3 | <=3.0.0-20250225100611-da4e44b77af4 | no fix published |
| GO-2026-6101 | Go | github.com/cloudreve/Cloudreve | all versions | no fix published |
| GO-2026-6101 | Go | github.com/cloudreve/Cloudreve/v3 | all versions | no fix published |
| GO-2026-6101 | Go | github.com/cloudreve/Cloudreve/v4 | all versions | no fix published |