CVE-2023-38501

MEDIUM NUCLEI

copyparty < 1.8.7 - Reflected Cross-Site Scripting via URL Parameters

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-38501. PoCs published by Vartamtezidis Theodoros. A Nuclei detection template is also available.

AI-analyzed exploit summary The exploit demonstrates a reflected XSS vulnerability in copyparty v1.8.6 by crafting a malicious URL that injects JavaScript code via the 'k304' parameter. The payload uses an image tag with an 'onerror' event to trigger an alert, confirming the vulnerability.

Description

copyparty is file server software. Prior to version 1.8.7, the application contains a reflected cross-site scripting via URL-parameter `?k304=...` and `?setck=...`. The worst-case outcome of this is being able to move or delete existing files on the server, or upload new files, using the account of the person who clicks the malicious link. It is recommended to change the passwords of one's copyparty accounts, unless one have inspected one's logs and found no trace of attacks. Version 1.8.7 contains a patch for the issue.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Vartamtezidis Theodoros · textwebappspython
https://www.exploit-db.com/exploits/51635

The exploit demonstrates a reflected XSS vulnerability in copyparty v1.8.6 by crafting a malicious URL that injects JavaScript code via the 'k304' parameter. The payload uses an image tag with an 'onerror' event to trigger an alert, confirming the vulnerability.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: copyparty <=1.8.6
No auth needed
Prerequisites: User interaction required to click the malicious link
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Nuclei Templates (1)

CopyParty v1.8.6 - Cross Site Scripting
MEDIUMVERIFIEDby ctflearner,r3Y3r53
Shodan: title:"copyparty" || http.title:"copyparty"
FOFA: title="copyparty"

Scores

CVSS v3 6.3
EPSS 0.7963
EPSS Percentile 99.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
9001/copyparty < 1.8.7
pypi/copyparty 0 - 1.8.7PyPI
Published Jul 25, 2023
Tracked Since Feb 18, 2026