CVE-2025-54796

Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page

State: Published
Severity: 7.5 High
Published: Aug 1, 2025
Updated: Aug 4, 2025
Reserved: Jul 29, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption
CWE-1333 Inefficient Regular Expression Complexity
CWE-833 Deadlock

Affected Products

Product	Versions
copyparty9001	< 1.18.9Affected

References

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