We are delighted to present version v1.33.5 of Contour, our layer 7 HTTP reverse proxy for Kubernetes clusters.
- All Changes
- Installing/Upgrading
- Compatible Kubernetes Versions
All Changes
Security fix for GHSA-g3xr-5w5j-w4q4
Fixes a bug where configuring fallback certificate with JWT verification in HTTPProxy allowed requests without TLS SNI or with unrecognized SNI to bypass JWT verification. Contour now rejects this invalid configuration.
Other Changes
- Bumps Go to 1.25.10 https://go.dev/doc/devel/release#go1.25.minor
- Bumps golang.org/x/net to v0.55.0 CVE-2026-39821
Installing and Upgrading
For a fresh install of Contour, consult the getting started documentation.
To upgrade an existing Contour installation, please consult the upgrade documentation.
Compatible Kubernetes Versions
Contour v1.33.5 is tested against Kubernetes 1.32 through 1.34.
Are you a Contour user? We would love to know!
If you're using Contour and want to add your organization to our adopters list, please visit this page. If you prefer to keep your organization name anonymous but still give us feedback into your usage and scenarios for Contour, please post on this GitHub thread.