Go/github.com/caddyserver/caddy/v2 CVE-2026-27590: critical 9.8, EPSS 0.61%
Caddy: Unicode case-folding length expansion causes incorrect split_path index in FastCGI transport
Action: Upgrade github.com/caddyserver/caddy/v2 to 2.11.1 or later.
go get github.com/caddyserver/caddy/v2@v2.11.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.11.1 | - |
Fixed versions
| 2.11.1 |
Sources
- osv: GHSA-5r3v-vc8m-m96g
- nvd: CVE-2026-27590
- https://github.com/caddyserver/caddy/security/advisories/GHSA-5r3v-vc8m-m96g
- https://github.com/php/frankenphp/security/advisories/GHSA-g966-83w7-6w38
- https://github.com/caddyserver/caddy
- https://github.com/caddyserver/caddy/releases/tag/v2.11.1
- https://pkg.go.dev/vuln/GO-2026-4536
CVE-2026-27590 · published · modified · JSON