High severityNVD Advisory· Published Aug 1, 2025· Updated Aug 4, 2025
Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page
CVE-2025-54796
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
copypartyPyPI | < 1.18.9 | 1.18.9 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-5662-2rj7-f2v6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-54796ghsaADVISORY
- github.com/9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83ghsax_refsource_MISCWEB
- github.com/9001/copyparty/releases/tag/v1.18.9ghsax_refsource_MISCWEB
- github.com/9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6ghsax_refsource_CONFIRMWEB
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