CVE-2025-54796

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

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

9001 · copyparty

CVSS v3.1 GITHUB

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

EPSS

0.43% chance of exploitation in the next 30 days, 36th percentile

Published

2025-08-01

Updated

2025-08-04

Proof-of-concept exploits (1)

• 9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6

Security advisories

• advisories/GHSA-5662-2rj7-f2v6
• 9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83

References

• CVE Record
• NVD entry