PT-2025-36792 · Proxmox · Proxmox Virtual Environment

Khankishiyev-J · Published 2025-09-09 · Updated 2025-09-10 · CVE-2025-57538

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Proxmox Virtual Environment version 8.4

Description: A stored cross-site scripting (XSS) vulnerability exists in the HTTP Proxy field within the Datacenter configuration panel. This allows an authenticated user to inject malicious input that is stored and executed in the context of other users’ browsers when they view the affected configuration page, potentially leading to arbitrary JavaScript execution.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-57538

Affected Products

Proxmox Virtual Environment

References · 7

• 🔥 https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xss · Exploit
• https://osv.dev/vulnerability/CVE-2025-57538 · Vendor Advisory
• https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/page-2#post-792010 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-57538 · Security Note
• https://youtube.com/watch?v=mN-0Zia1LZw · Note
• https://twitter.com/CVEnew/status/1965691909520982183 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1965568979839103050 · Twitter Post