Self-hosted Coolify operators need to check their exact v4 branch: patched versions are 4.0.1, 4.1.3, 4.2.1, 4.3.24 and 4.4.7, but maintainers recommend 4.4.7 for fuller coverage.
Cloudflare Tunnel changes how Access-protected ingress rules match dot segments and repeated slashes. Opt in now; test before the January 25 default flip.
The break is narrow but concrete: scripts and CI/CD calling the old route paths can fail, while monitoring code that expected `connections` inline must fetch it separately.
Cloudflare saw roughly 22,000 weak-chain TLS handshakes, about 160 unusual forged certificates and 50 million skewed challenge-page probes. The data indicate continuing exposure, not 22,000 successful attacks.
Cloudflare Private Origins is GA, but not a one-click option for every account: it needs a private-network connection, entitlement and routing setup, and Argo Smart Routing and Aegis remain unsupported.
HTTP/3 isn't automatically safe from compressed-header denial of service. Check the exact QUIC/QPACK library and version behind your proxy or app, upgrade fixed stacks and limit or disable vulnerable HTTP/3 endpoints.