CVE-2026-54562: Cloudreve

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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 Cloudreve: before 4.16.1 (fixed in 4.16.1)

Published 2026-07-15. Last modified 2026-07-15.