Description
A stored cross-site scripting (XSS) vulnerability exists in the WebAuthn Relying Party field within the Datacenter configuration of Proxmox Virtual Environment (PVE) 8.4. Authenticated users can inject JavaScript code that is later executed in the browsers of users who view the configuration page, enabling client-side attacks.
References (3)
Core 3
Core References
Issue Tracking, Vendor Advisory
https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/page-2#post-792010
Exploit, Third Party Advisory
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xss
Broken Link
https://www.youtube.com/watch?v=-wvkN-7oT5U
Scores
CVSS v3
5.4
EPSS
0.0003
EPSS Percentile
9.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
proxmox/virtual_environment
8.4
Published
Sep 09, 2025
Tracked Since
Feb 18, 2026