The current version of Unbound is 1.26.1 (as of 16/09/2026). 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.
- Unbound: Mehrere Schwachstellen
WID-SEC-W-2026-2492 · 30 Sept
- Unbound: Mehrere Schwachstellen
WID-SEC-W-2026-1599 · 30 Sept
- Unbound: Mehrere Schwachstellen
WID-SEC-W-2026-3392 · 29 Sept
- Unbound: Schwachstelle ermöglicht Manipulation von Dateien
WID-SEC-W-2025-2386 · 21 Jul
Unbound at a glance
Unbound is a widely used open-source validating, recursive DNS resolver, valued for security (DNSSEC) and performance. Unbound ships regular releases plus coordinated security fixes; as DNS infrastructure the network relies on, keeping it current matters.
For admins Unbound usually comes from the distribution, which backports fixes — for security advisories, confirm the patched package is installed and the service restarted. Harden the configuration: restrict who can query it (avoid being an open resolver), enable DNSSEC validation, and keep it off untrusted networks unless intended. Because DNS outages cascade, test changes and keep a fallback. Unbound is often paired with Pi-hole/AdGuard as the upstream resolver. After updating, verify that resolution and DNSSEC validation work. Track the version and its support status. Its security focus makes it a solid resolver choice, but it still needs patching. Patchletter surfaces new Unbound releases.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 1.26.1 | STABLE | 16/09/2026 | – |
| 1.26.0 | STABLE | 05/08/2026 | – |
| 1.25.2 | STABLE | 23/07/2026 | – |
| 1.25.1 | STABLE | 08/07/2026 | – |
Frequently asked questions
- What is the latest version of Unbound?
- Unbound 1.26.1, released 16/09/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Unbound 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 Unbound updates?
- Tick Unbound 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 Unbound 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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The badge shows the current Unbound version and keeps it up to date. Anyone may embed it, no account needed.
[](https://patchletter.com/en/software/unbound)https://patchletter.com/badge/unbound.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
