CVE-2025-57540

MEDIUM 5.4CVE-2025-57540 · Published 09/09/2025 · updated 17/06/2026

In short

CVE-2025-57540 is a MEDIUM (CVSS 5.4) vulnerability affecting virtual environment (proxmox).
Chance of exploitation in the next 30 days (EPSS): 0.29%, higher than 21.9% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
virtual environment proxmox	`= 8.4`	No fix yet

Description

A stored cross-site scripting (XSS) vulnerability exists in the WebAuthn Relying Party field within the Datacenter configuration of Proxmox Virtual Environment (PVE) 8.4. Authenticated users can inject JavaScript code that is later executed in the browsers of users who view the configuration page, enabling client-side attacks.

References

forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/page-2 · Issue Tracking
khankishiyev-j/bug-bounty · Exploit
youtube.com/watch · Broken Link

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Package

Affected versions

Patched versions

virtual environment

proxmox

= 8.4

No fix yet

Description

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