CVE-2025-54796: high-severity vulnerability in 9001 copyparty
Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
9001 · copypartyRelated CVEs — 9001 copyparty
In the same product, most dangerous first.
CVE-2023-37474HIGHPath traversal in copypartyEPSS 44.9%CVE-2023-38501MEDIUMcopyparty vulnerable to reflected cross-site scripting via k304 parameterEPSS 9.2%CVE-2025-54589MEDIUMcopyparty Reflected XSS via Filter ParameterEPSS 2.4%CVE-2025-54423MEDIUMcopyparty has a DOM-Based XSS vulnerability when displaying multimedia metadataEPSS 0.5%CVE-2025-27145LOWcopyparty renders unsanitized filenames as HTML when user uploads empty filesEPSS 0.5%CVE-2026-30974MEDIUMCopyparty volflag `nohtml` did not block javascript in svg filesEPSS 0.4%