CVE-2025-57538

MEDIUM severity · CVSS 5.4 · Cross-site scripting (XSS)

5.4CVSS MEDIUM

Summary

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredLow

User interactionRequired

Confidentiality impactLow

Integrity impactLow

Availability impactNone

Exploit probability (EPSS)0%

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products we track (1)

Proxmox VE

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

NVD record
https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/page-2#post-792010Advisory
https://www.youtube.com/watch?v=mN-0Zia1LZw
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xssAdvisory
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xssAdvisory