9001/copyparty · Security
copyparty allows Regex Denial of Service (ReDoS) in the upload listing
- GHSA ID
- GHSA-5662-2rj7-f2v6
- CVE ID
- CVE-2025-54796
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Summary
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.
PoC
https://127.0.0.1:3923/?ru&filter=(.+)+x
Impact
The server becomes fully inaccessible for a long time.
CWEs
- CWE-1333 · Inefficient Regular Expression Complexity
References
- https://github.com/9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-54796 ↗
- https://github.com/9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83 ↗
- https://github.com/9001/copyparty/releases/tag/v1.18.9 ↗
- https://github.com/advisories/GHSA-5662-2rj7-f2v6 ↗