GHSA-V6W6-358X-2433

Cloudreve Admin.Read OAuth tokens can trigger server-side node test requests

An attacker who obtains an admin-authorized OAuth token with Admin.Read but not Admin.Write can make the Cloudreve server connect to arbitrary URLs supplied in the request body. This can be used for blind SSRF, internal service probing, and triggering signed Cloudreve slave-style requests to attacker-chosen endpoints.

The application does not correctly enforce access controls, allowing a principal to access resources or operations beyond their granted permissions. Typical impact: unauthorized data access or execution of privileged operations.

GHSA-V6W6-358X-2433 has a CVSS score of 5.4 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.0.0-20260626022735-332a9d800205); upgrading removes the vulnerable code path.

Kodem intelligence

Already deployed Kodem?

• Add middleware.RequiredScopes(types.ScopeAdminWrite) to both node test routes.
• Consider applying SSRF validation or network egress controls to all admin-supplied test URLs.
• Audit other admin test endpoints for read-scoped side effects.

1. What is GHSA-V6W6-358X-2433? GHSA-V6W6-358X-2433 is a medium-severity incorrect authorization vulnerability in github.com/cloudreve/Cloudreve/v4 (go), affecting versions < 4.0.0-20260626022735-332a9d800205. It is fixed in 4.0.0-20260626022735-332a9d800205. The application does not correctly enforce access controls, allowing a principal to access resources or operations beyond their granted permissions.
2. How severe is GHSA-V6W6-358X-2433? GHSA-V6W6-358X-2433 has a CVSS score of 5.4 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which packages are affected by GHSA-V6W6-358X-2433?
   • github.com/cloudreve/Cloudreve/v4 (go) (versions < 4.0.0-20260626022735-332a9d800205)
   • github.com/cloudreve/Cloudreve/v3 (go) (versions <= 3.0.0-20250225100611-da4e44b77af4)
4. Is there a fix for GHSA-V6W6-358X-2433? Yes. GHSA-V6W6-358X-2433 is fixed in 4.0.0-20260626022735-332a9d800205. Upgrade to this version or later.
5. Is GHSA-V6W6-358X-2433 exploitable, and should I be worried? Whether GHSA-V6W6-358X-2433 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether GHSA-V6W6-358X-2433 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix GHSA-V6W6-358X-2433? Upgrade github.com/cloudreve/Cloudreve/v4 to 4.0.0-20260626022735-332a9d800205 or later.

Other vulnerabilities in github.com/cloudreve/Cloudreve/v4