CVE-2025-54796: 9001 Copyparty

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server. This is fixed in version 1.18.9.

Affected products

• 9001 Copyparty: before 1.18.9 (fixed in 1.18.9)

Published 2025-08-02. Last modified 2026-06-17.