CVE-2025-57538: Proxmox Virtual Environment

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Proxmox Virtual Environment: version 8.4 only

Published 2025-09-09. Last modified 2026-06-17.