XSS in Proxmox Virtual_environment
CVE-2025-57540
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 execute…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (18.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Proxmox Virtual_environment — versions 8.4
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory)
- cve@mitre.org (Broken Link)
- cve@mitre.org (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-57540?
- CVE-2025-57540 is a medium-severity vulnerability in Proxmox Virtual_environment, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-09-09.
- How severe is CVE-2025-57540?
- Medium severity. CVSS v3 base score is 5.4 out of 10.