Description
A stored cross-site scripting (XSS) vulnerability in the HTTP Proxy field within the Datacenter configuration panel of Proxmox Virtual Environment (PVE) 8.4 allows an authenticated user to inject malicious input. The input is stored and executed in the context of other users' browsers when they view the affected configuration page. This can lead to arbitrary JavaScript execution.
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=mN-0Zia1LZw
Scores
CVSS v3
5.4
EPSS
0.0005
EPSS Percentile
16.1%
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