CVE-2025-57538

low-risk
Published 2025-09-09

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.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.4/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Virtual Environment

Affected Vendors

Proxmox

References (4)

Issue Tracking https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisorie...
Exploit https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xss
Broken Link https://www.youtube.com/watch?v=mN-0Zia1LZw
Exploit https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xss
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal