Description
A stored cross-site scripting (XSS) vulnerability in the U2F Origin field of the Datacenter configuration in Proxmox Virtual Environment (PVE) 8.4 allows authenticated users to store malicious input. The payload is rendered unsafely in the Web UI and executed when viewed by other users, potentially leading to session hijacking or other 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