CVEvulnerability

CVE-2026-7120

5.3 MEDIUM Published 2026-07-23 Modified 2026-07-28 Official page ↗
Status
Analyzed
Published
2026-07-23
Last modified
2026-07-28
Assigner
ce714d77-add3-4f53-aff5-83d477b104bb
CVSS 3.1 (ce714d77-add3-4f53-aff5-83d477b104bb)
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-180

Description

@fastify/static evaluates the allowedPath callback before normalizing dot segments and duplicate path separators in the pathname used for file resolution. Versions up to and including 10.1.1 are affected. An unauthenticated attacker can bypass allowedPath restrictions by requesting equivalent non-canonical pathnames, causing files that were intended to be denied to be served anyway. The bypass does not allow access outside the configured static root by itself, it defeats path-based filtering only. The issue is patched in @fastify/static 10.1.2.

Affected configurations

• fastify fastify-static (< 10.1.2)

Related

Weakness · CWE (1)

  • CWE-180 Incorrect Behavior Order: Validate Before Canonicalize weakness

References