{"id":"GO-2026-4536","summary":"Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2","details":"Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2","aliases":["CVE-2026-27590","GHSA-5r3v-vc8m-m96g"],"modified":"2026-02-26T19:11:19.880583Z","published":"2026-02-26T16:27:51Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4536","review_status":"REVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/caddyserver/caddy/security/advisories/GHSA-5r3v-vc8m-m96g"},{"type":"WEB","url":"https://github.com/caddyserver/caddy/releases/tag/v2.11.1"},{"type":"WEB","url":"https://github.com/php/frankenphp/security/advisories/GHSA-g966-83w7-6w38"}],"affected":[{"package":{"name":"github.com/caddyserver/caddy/v2","ecosystem":"Go","purl":"pkg:golang/github.com/caddyserver/caddy/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.1"}]}],"ecosystem_specific":{"imports":[{"symbols":["Transport.Provision","Transport.RoundTrip","Transport.UnmarshalCaddyfile"],"path":"github.com/caddyserver/caddy/v2/modules/caddyhttp/reverseproxy/fastcgi"}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4536.json"}}],"schema_version":"1.7.3"}