cvedb.io
CVE-2026-46415
HIGH · CVSS 8.2
EPSS exploitation probability: 0%
Published 2026-07-20T16:17:01.163 · Last modified 2026-07-20T16:17:01.163

Summary

The Caddy Defender plugin is a middleware for Caddy that allows users to block or manipulate requests based on the client's IP address. Prior to version 0.10.1, Caddy Defender used `r.RemoteAddr` when evaluating whether a request should be blocked. `RemoteAddr` is the address of the immediate peer connected to Caddy. In deployments where Caddy is behind a trusted proxy, CDN, or load balancer, the immediate peer is usually the proxy, not the original client. Caddy resolves the original client address into its `client_ip` request variable after applying the configured `trusted_proxies` policy, but Defender did not use that value. As a result, clients from blocked IP ranges could bypass Defender when accessing Caddy through a trusted proxy whose own IP address was not blocked. This affects de

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.