Arbitrary Regex Vulnerability in Copyparty File Server
CVE-2025-54796

7.5HIGH

Key Information:

Vendor

9001

Status
Copyparty
Vendor
CVE Published:
2 August 2025

What is CVE-2025-54796?

Copyparty, a portable file server, is exposed to a vulnerability where the filter parameter on the 'Recent Uploads' page allows for the use of arbitrary regular expressions. If this feature is activated, an attacker can exploit it by providing a crafted filter that leads to a deadlock situation within the server. This issue has been addressed in version 1.18.9, which includes necessary mitigations to prevent such denial of service scenarios.

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Affected Version(s)

copyparty < 1.18.9

References

https://github.com/9001/copyparty/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/9001/copyparty/commit/09910ba80784c398...
x_refsource_MISC
https://github.com/9001/copyparty/releases/tag/v1.18.9
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

JSON
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