Resource exhaustion in 9001 Copyparty
CVE-2025-54796
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- 9001 Copyparty — versions < 1.18.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6 (Exploit, Vendor Advisory)
- github.com/9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83 (Patch)
- github.com/9001/copyparty/releases/tag/v1.18.9 (Release Notes)
Frequently asked questions
- What is CVE-2025-54796?
- CVE-2025-54796 is a high-severity vulnerability in 9001 Copyparty, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-08-02.
- How severe is CVE-2025-54796?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-54796 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.