medium6.5
CVE-2026-54562
Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses
Impact
Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/cloudreve/Cloudreve/v4 | < 4.0.0-20260606025411-aaebf317a78f | 4.0.0-20260606025411-aaebf317a78f |
| go | github.com/cloudreve/Cloudreve/v3 | <= 3.0.0-20250225100611-da4e44b77af4 | none recorded |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-x756-g4x3-c64m
- https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m
- https://nvd.nist.gov/vuln/detail/CVE-2026-54562
- https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312
- https://github.com/cloudreve/cloudreve/releases/tag/4.16.1