Directory Traversal

Overview @fastify/static is a Plugin for serving static files as fast as possible. Affected versions of this package are vulnerable to Directory Traversal via the static file handler process. An attacker can access protected files by submitting requests with non-canonical path segments, such as d...

CVE-2026-18427

@fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegatin...

CVE-2026-18427 @fastify/static vulnerable to route guard bypass via non-canonical path segments

@fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegatin...

EUVD-2026-54086

@fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegatin...

CVE-2026-18427 @fastify/static vulnerable to route guard bypass via non-canonical path segments

@fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegatin...

CVE-2026-18427 @fastify/static vulnerable to route guard bypass via non-canonical path segments

@fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegatin...

CVE-2026-18427

CVE-2026-18427 affects @fastify/static prior to version 10.1.3. The patch left gaps in path canonicalization: dot segments, encoded dots, duplicate slashes, and backslashes were not normalized before route matching or serving, enabling an unauthenticated bypass of route-based guards for a protect...

GHSA-83W8-P2F5-377R @fastify/static vulnerable to route guard bypass via path traversal

Impact @fastify/static is vulnerable to a bypass of route-based middleware and guards via non-leading .. and %2E%2E path segments. find-my-way does not normalize .. when matching routes, so a request such as /foo/../deep/secret.txt matches the static plugin's catch-all instead of the guarded...

CVE-2026-15074

The CVE-2026-15074 issue affects @fastify/static up to and including version 10.1.0, which fails to reject dot-dot path segments in request pathnames before file resolution. This bypasses the earlier fix for CVE-2026-6414 (encoded slashes only) because the underlying send library normalizes dot s...

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...

CVE-2026-6414

The CVE concerns @fastify/static (versions 8.0.0–9.1.0) where percent-encoded path separators (%2F) are decoded before filesystem resolution, but Fastify’s router treats them as literal characters. This mismatch allows attackers to bypass route-based middleware/guards that protect files served by...

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...