Bug 2491901 (CVE-2026-45692) - CVE-2026-45692 github.com/caddyserver/caddy/v2: Caddy: Remote Admin Authorization Bypass in `/config` API via Array Index Normalization
Summary: CVE-2026-45692 github.com/caddyserver/caddy/v2: Caddy: Remote Admin Authoriza...
Keywords:
Status: NEW
Alias: CVE-2026-45692
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-23 19:02 UTC by OSIDB Bzimport
Modified: 2026-07-09 09:08 UTC (History)
26 users (show)

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Description OSIDB Bzimport 2026-06-23 19:02:23 UTC 
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.
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