CVE-2026-45692 — Caddy: Remote Admin Authorization Bypass in `/config` API via Array Index Normalization
Caddy is an extensible server platform that uses TLS by default. From 2.4.0 until 2.11.3, the authorization layer and the /config traversal layer do not agree on what object the…
Published: 2026-06-23 · CVSS: 5.4 · CVSS 3.1
Caddy is an extensible server platform that uses TLS by default. From 2.4.0 until 2.11.3, the authorization layer and the /config traversal layer do not agree on what object the path refers to. In this case, a path authorized for one config object is accepted, but then resolves to a different config object during traversal. This happens because the authorization layer uses string prefix matching and the /config traversal layer parses array indices numerically using strconv.Atoi(). This vulnerability is fixed in 2.11.3.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7