CVE-2026-54560 Details
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.
A vulnerability in Cloudreve's OAuth implementation allows access tokens to bypass scope enforcement. This issue affects versions 4.12.0 through 4.16.0. The vulnerability arises because access tokens are issued without the 'client_id' claim, leading the JWT verifier to skip loading token scopes into the request context. As a result, low-scope tokens can access APIs requiring higher scopes, such as file management, sharing, workflow, user settings, WebDAV accounts, and potentially admin privileges.
Users can update to Cloudreve version 4.16.1, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 15, 2026CISA-ADP
Assessed Jul 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8 | CISA-ADP | AdvisoryRemedyVendor |
| https://github.com/cloudreve/cloudreve/commit/ed20843dc3df20a25fcaf6b538647e11c4d68d87 | [email protected] | Source CodeVendor |
| https://github.com/cloudreve/cloudreve/releases/tag/4.16.1 | [email protected] | Release NotesVendor |
| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Cloudreve | >= 4.12.0, <= 4.16.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | CISA-ADP |
| Jul 15, 2026 | New CVE Received | [email protected] |