high7.5
CVE-2025-54796
copyparty allows Regex Denial of Service (ReDoS) in the upload listing
Impact
### 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | copyparty | <= 1.18.8 | 1.18.9 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| 9001 | Copyparty | before 1.18.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83
- https://github.com/9001/copyparty/releases/tag/v1.18.9
- https://github.com/9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6
- https://github.com/advisories/GHSA-5662-2rj7-f2v6
- https://nvd.nist.gov/vuln/detail/CVE-2025-54796