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Vulnerability Report: GO-2026-4536

CVE-2026-27590, GHSA-5r3v-vc8m-m96g
Affects: github.com/caddyserver/caddy/v2
Published: Feb 26, 2026

Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2

For detailed information about this vulnerability, visit https://github.com/caddyserver/caddy/security/advisories/GHSA-5r3v-vc8m-m96g.

Affected Packages

Path

Go Versions

Symbols
github.com/caddyserver/caddy/v2/modules/caddyhttp/reverseproxy/fastcgi

before v2.11.1

Aliases

References

Feedback

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