CVE-2025-57538 — MEDIUM (5.4)

Vulnerability 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.

CVSS Score

5.4

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Proxmox	Virtual Environment	8.4

Related Weaknesses (CWE)

CWE-79

References

https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisorieIssue TrackingVendor Advisory
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xssExploitThird Party Advisory
https://www.youtube.com/watch?v=mN-0Zia1LZwBroken Link
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xssExploitThird Party Advisory

FAQ

What is CVE-2025-57538?

CVE-2025-57538 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 mali...

How severe is CVE-2025-57538?

CVE-2025-57538 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-57538?

Check the references section above for vendor advisories and patch information. Affected products include: Proxmox Virtual Environment.