The current version of Varnish Cache is 9.1.0 (as of 22/09/2026). patchletter checks the official source daily and emails you new releases.
Varnish Cache at a glance
Varnish is a widely used open-source HTTP caching reverse proxy (a web accelerator), sitting in front of web servers to speed up delivery. Varnish ships regular releases plus security fixes; as a component in the request path handling untrusted traffic, timely patching matters.
For admins Varnish updates are usually low-risk (swap the package, reload), but its configuration language (VCL) can change between major versions — read the upgrade notes and test the VCL before upgrading. Because Varnish parses HTTP and caches responses, a flaw can have request-smuggling or cache-poisoning implications — apply security releases promptly. Keep the admin/management interface off the open network. Mind what gets cached (avoid caching sensitive, per-user content) and how TLS is terminated (often by a separate layer in front). After updating, verify that caching and the VCL behave correctly. Track the version and its support window; patchletter surfaces new Varnish releases.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 9.1.0 | STABLE | 22/09/2026 | – |
| 9.0.4 | STABLE | 17/09/2026 | – |
| 9.0.3 | STABLE | 08/07/2026 | – |
Frequently asked questions
- What is the latest version of Varnish Cache?
- Varnish Cache 9.1.0, released 22/09/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Varnish Cache 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 Varnish Cache updates?
- Tick Varnish Cache 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 Varnish Cache 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/varnish)https://patchletter.com/badge/varnish.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
