CVE-2025-54796 HIGH

CVE-2025-54796: Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page

Vendor 9001
Product copyparty
Weakness CWE-400
Published August 1, 2025
Last update August 4, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 1, 2025 CVE published
August 4, 2025 Record updated