Information disclosure in Caddyserver Caddy

CVE-2026-30852

Caddy is an extensible server platform that uses TLS by default. From version 2.7.5 to before version 2.11.2, the vars_regexp matcher in vars.go:337 double-expands user-controlled input through the Caddy replacer. When vars_regexp matches…

Vulnerability class: Information Disclosure

EPSS: 0.000 (6.2th percentile) — read the EPSS interpretation.

Affected products

Caddyserver Caddy — versions >= 2.7.5, < 2.11.2

Weakness classification (CWE)

References

https://github.com/caddyserver/caddy/security/advisories/GHSA-m2w3-8f23-hxxf (x_refsource_CONFIRM)
https://github.com/caddyserver/caddy/pull/5408 (x_refsource_MISC)
https://github.com/caddyserver/caddy/releases/tag/v2.11.2 (x_refsource_MISC)