copyparty vulnerable to reflected cross-site scripting via k304 parameter
48Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 6.3epss 9.3%
from disclosure to weapon3 days
Published on NVDJul 25
1st PoC+3d
exploitation probability
9.3%top 5% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Affected products
9001 · copypartypublic PoCs found — 2✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/51635cve_referencepacketstormsecurity.com/files/173821/Copyparty-1.8.6-Cross-Site-Scripting.htmlunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.