What’s Vulnerable › Vulnerabilities

CVE-2026-101048: Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-27 · updated 2026-10-08
• Weakness: CWE-863

Description

Cloudreve before 4.17.0 registers the administrative node test endpoints (POST /api/v4/admin/node/test and POST /api/v4/admin/node/test/downloader) without requiring the Admin.Write OAuth scope, unlike the node create/update/delete routes. An OAuth client that has been authorized by an administrator with only the Admin.Read scope can therefore submit attacker-controlled node definitions and cause the Cloudreve server to issue outbound requests to arbitrary URLs, enabling blind server-side request forgery, internal service probing, and delivery of signed Cloudreve slave-style requests to attacker-chosen endpoints.

Affected products

• cloudreve: before 4.17.0 — fixed in 4.17.0

How to fix

Upgrade to a fixed version: cloudreve 4.17.0. Check the vendor advisory for mitigations.

References

• https://github.com/cloudreve/cloudreve/security/advisories/GHSA-v6w6-358x-2433
• https://www.vulncheck.com/advisories/cloudreve-before-4.17.0-ssrf-via-admin-read-oauth-scope
• https://github.com/cloudreve/cloudreve/security/advisories/GHSA-v6w6-358x-2433

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