Vulnerability · Published Aug 1, 2025 · Assigned by GitHub_M
CVE-2025-54796Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page
High 7.5
In plain English
A high-severity uncontrolled resource consumption in copyparty from 9001. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 57.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | copyparty | 1.18.9 | GHSA-5662-2rj7-f2v6 |
| PyPI | copyparty | 1.18.9 | PYSEC-2026-1275 |
Affected products (as reported)
Weakness: CWE-400, CWE-1333, CWE-833 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6 x_refsource_CONFIRM
- https://github.com/9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83 x_refsource_MISC
- https://github.com/9001/copyparty/releases/tag/v1.18.9 x_refsource_MISC