CVE-2026-92284

Caddy: Unbounded body buffer via {http.request.body} placeholder — memory exhaustion DoS

State: Published
Severity: 6.9 Medium
Published: Sep 23, 2026
Updated: Sep 23, 2026
Reserved: Sep 15, 2026

Description

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, in modules/caddyhttp/replacer.go, resolving http.request.body reads the complete request body with an unbounded io.Copy before request-body middleware limits apply, allowing memory exhaustion and process termination.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
caddycaddyserver	<= 2.11.3Affected

References

https://github.com/caddyserver/caddy/security/advisories/GHSA-j8px-rmrx-76h9

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