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

26 Jun 2026, 19:16

Type	Values Removed	Values Added
References	~~() 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

26 Jun 2026, 18:01

Type	Values Removed	Values Added
References	~~() https://github.com/caddyserver/caddy/security/advisories/GHSA-x5w9-xh9r-mvfc -~~	() https://github.com/caddyserver/caddy/security/advisories/GHSA-x5w9-xh9r-mvfc - Exploit, Vendor Advisory
First Time		Caddyserver Caddyserver caddy
CPE		cpe:2.3:a:caddyserver:caddy::::::::

23 Jun 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-23 18:17

Updated : 2026-06-26 19:16

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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