CVE-2026-45692
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Caddy
PublishedJun 23, 2026
First seenJun 23, 2026
Weakness typeCWE-187CWE-187CWE-863Incorrect authorization
How to fix
Update
- caddyserver caddy2.11.3 or later
- github.com/caddyserver/caddy/v22.11.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| caddyserver caddy | 2.4.0 ≤ v < 2.11.3 | 2.11.3 |
| github.com/caddyserver/caddy/v2Go | 2.4.0 ≤ v < 2.11.3 | 2.11.3 |
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