CVE-2025-57539

A stored cross-site scripting (XSS) vulnerability in the U2F Origin field of the Datacenter configuration in Proxmox Virtual Environment (PVE) 8.4 allows authenticated users to store malicious input. The payload is rendered unsafely in the Web UI and executed when viewed by other users, potentially leading to session hijacking or other attacks.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
mitreCNA
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CISA-ADPADP
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
VendorProductVersion
proxmoxvirtual_environment
8.4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/page-2#post-792010
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xss
https://www.youtube.com/watch?v=-wvkN-7oT5U
https://github.com/khankishiyev-j/bug-bounty/blob/main/proxmox-xss