Http4s: ResourceService and Webjar Service path escape via percent-encoded separators

The static content handlers ResourceService and WebjarService URL decode each path segment and then reject only segments that are exactly "", ".", or "..". A percent-encoded separator %2F lets an attacker smuggle a ../ segment past that filter and escape the configured base, reading resources tha...

GHSA-CRQ5-92J2-J7WV Http4s: ResourceService and Webjar Service path escape via percent-encoded separators

The static content handlers ResourceService and WebjarService URL decode each path segment and then reject only segments that are exactly "", ".", or "..". A percent-encoded separator %2F lets an attacker smuggle a ../ segment past that filter and escape the configured base, reading resources tha...

EUVD-2026-79177

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, ResourceService and WebjarService decode each URL path segment but reject only segments exactly equal to an empty string, a dot, or two dots. A request containing percent-encoded slash or backslash separators can turn ...

PT-2026-92403

The static content handlers ResourceService and WebjarService URL decode each path segment and then reject only segments that are exactly "", ".", or "..". A percent-encoded separator %2F lets an attacker smuggle a ../ segment past that filter and escape the configured base, reading resources tha...

CVE-2026-6414 @fastify/static vulnerable to route guard bypass via encoded path separators

@fastify/static versions 8.0.0 through 9.1.0 decode percent-encoded path separators %2F before filesystem resolution, while Fastify's router treats them as literal characters. This mismatch allows attackers to bypass route-based middleware or guards that protect files served by @fastify/static. F...