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Proxmox VE: which version is safe to update to?

Open-source virtualization platform for KVM VMs and LXC containers. Every release below is checked against official notes, NVD CVE data and public community reports.

All recent releases

Recent CVEs (last 120 days)

• CVE-2023-54391 CRITICAL 9.3 Proxmox Virtual Environment (VE) 7.0 through 8.0 contains an authentication bypass vulnerability in libpve-access-control before 8.0.4 that allows unauthenticated attackers to authenticate as any existing enabled user w…
• CVE-2026-51082 HIGH 7.2 A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment (PVE) 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-contai…
• CVE-2026-51083 MEDIUM 6.5 Incorrect access control in Proxmox Virtual Environment (PVE) 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users within limited privileges to obtain hashed passwords via the cloudinit/dump API.
• CVE-2026-51081 MEDIUM 6.1 A cross-site scripting (XSS) vulnerability in Proxmox Virtual Environment (PVE) 9.x 5.1.8 and Proxmox Virtual Environment (PVE) 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafte…