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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-55499

Cloudreve: Broken access control in file event stream leaks activity events for unshared siblings to single-file share recipients

Description

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, a single-file share event-stream subscription resolves the share root to the owner’s parent folder and subscribes to that folder topic, allowing an authenticated share recipient to receive names, paths, rename targets, event types, and hashed identifiers for unshared sibling files and folders. This issue is fixed in version 4.17.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

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  • < 4.17.0affected

References