CVE-2026-45692

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/caddyserver/caddy/security/advisories/GHSA-x5w9-xh9r-mvfc	Exploit Vendor Advisory
https://github.com/caddyserver/caddy/security/advisories/GHSA-x5w9-xh9r-mvfc	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Caddy es una plataforma de servidor extensible que utiliza TLS por defecto. Desde la versión 2.4.0 hasta la 2.11.3, la capa de autorización y la capa de recorrido de /config no concuerdan sobre a qué objeto se refiere la ruta. En este caso, se acepta una ruta autorizada para un objeto de configuración, pero luego se resuelve a un objeto de configuración diferente durante el recorrido. Esto ocurre porque la capa de autorización utiliza la coincidencia de prefijos de cadena y la capa de recorrido de /config analiza los índices de matriz numéricamente usando strconv.Atoi(). Esta vulnerabilidad se corrige en la versión 2.11.3.

Information

Published : 2026-06-23 18:17

Updated : 2026-10-25 23:10

NVD link : CVE-2026-45692

Mitre link : CVE-2026-45692

CVE.ORG link : CVE-2026-45692

JSON object : View

Products Affected

caddyserver

caddy

CWE

CWE-187

Partial String Comparison

CWE-863

Incorrect Authorization

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