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CVE-2025-54796

Good to know:

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Date: August 1, 2025

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.

Severity Score

Related Resources (6)

https://github.com/9001/copyparty/commit/09910ba80784c3980947d92f45db696398c0fd83
https://github.com/9001/copyparty/security/advisories/GHSA-5662-2rj7-f2v6
https://github.com/9001/copyparty/releases/tag/v1.18.9
https://nvd.nist.gov/vuln/detail/CVE-2025-54796
https://github.com/9001/copyparty
https://www.mend.io/vulnerability-database/CVE-2025-54796

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Deadlock

CWE-833

Inefficient Regular Expression Complexity

CWE-1333

Top Fix

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Upgrade Version

Upgrade to version copyparty - 1.18.9;copyparty - 1.18.9;copyparty - 1.18.9;https://github.com/9001/copyparty.git - v1.18.9

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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