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CVE PROGRAM SOURCE RECORD5.4 Medium

CVE-2026-45692

Caddy: Remote Admin Authorization Bypass in `/config` API via Array Index Normalization

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

caddyserver caddy

  • >= 2.4.0, < 2.11.3affected

References