Proxmox Backup Server
Proxmox Server Solutions · current 4.2
The current version of Proxmox Backup Server is 4.2 (as of 29/04/2026). patchletter checks the official source daily and emails you new releases.
BSI security advisories
Advisories the German BSI (CERT-Bund) published for this product. Whether your version is affected is stated in the advisory itself.
- Proxmox Backup Server: Mehrere Schwachstellen
WID-SEC-W-2026-3781 · 7 Oct
- Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service
WID-SEC-W-2025-2040 · 5 Oct
- Proxmox Backup Server: Schwachstelle ermöglicht Manipulation von Dateien und Offenlegung von Informationen
WID-SEC-W-2026-2838 · 14 Aug
Proxmox Backup Server at a glance
Proxmox Backup Server (PBS) is an open-source, deduplicating backup solution from the Proxmox team, tightly integrated with Proxmox VE. It ships regular point updates via APT alongside the rest of the Proxmox family.
For admins the update grounds are the same as Proxmox VE: choose the enterprise or no-subscription repo deliberately and apply updates promptly. As backup infrastructure, verified restores matter more than anything — test them, and use PBS's verification jobs and pruning/retention thoughtfully. Take a config backup before larger upgrades and read the release notes. The datastore belongs on protected storage; consider immutability/off-site copies against ransomware, which targets backups. Keep the PBS version compatible with the connected Proxmox VE version.
Support cycles (endoflife.date)
| Cycle | Latest version | Status |
|---|---|---|
| 4 | 4.2 | supported |
| 3 | 3.4 | End of Life |
| 2 | 2.4.1 | End of Life |
| 1 | 1.1.10 | End of Life |
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 4.2 | STABLE | 29/04/2026 | Release notes → |
| 4.1 | STABLE | 26/11/2025 | Release notes → |
| 4.0 | STABLE | 06/08/2025 | Release notes → |
Frequently asked questions
- What is the latest version of Proxmox Backup Server?
- Proxmox Backup Server 4.2, released 29/04/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Proxmox Backup Server release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new Proxmox Backup Server updates?
- Tick Proxmox Backup Server off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new Proxmox Backup Server version ships
We reconcile the vendor source daily. When a new version appears, it lands in your inbox right away or bundled as a digest. The update email is free and ends with one click. Alerts about vulnerabilities and end of support are part of patchletter Pro.
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[](https://patchletter.com/en/software/proxmox-backup-server)https://patchletter.com/badge/proxmox-backup-server.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
