What’s Vulnerable › Vulnerabilities

CVE-2026-54562: Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-15 · updated 2026-07-15
• Weakness: CWE-918

Description

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 products

• cloudreve: before 4.16.1

References

• https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312
• https://github.com/cloudreve/cloudreve/releases/tag/4.16.1
• https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m
• https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m

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