@fastify/static vulnerable to Authorization Bypass via Non-Canonical URL Paths
Impact
@fastify/static evaluates the allowedPath callback before normalizing dot segments and duplicate slashes in the pathname used for file resolution. Non-canonical pathnames such as //file, /./file, or /public/../private/file bypass allowedPath filtering while resolving to the intended file on disk.
Applications that use allowedPath as a security boundary to restrict access to specific static files or path subtrees may unintentionally expose files that were intended to be denied.
Patches
Upgrade to @fastify/static >= 10.1.2.
Workarounds
None. Upgrade to the patched version.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @fastify/static | < 10.1.2 | 10.1.2 |
References
- https://github.com/fastify/fastify-static/security/advisories/GHSA-8pvw-jcv7-9cmj
- https://nvd.nist.gov/vuln/detail/CVE-2026-7120
- https://github.com/fastify/fastify-static/commit/878c72e920fabacf7e37739bf78057044717bf63
- https://cna.openjsf.org/security-advisories.html
- https://github.com/fastify/fastify-static
- https://github.com/fastify/fastify-static/releases/tag/v10.1.2
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-180- Platform
- npm
- Package
@fastify/static- Disclosed
- 24.07.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8pvw-jcv7-9cmj - CC BY 4.0
Vulnerability history: @fastify/static
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 04.2026 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 3
Disclosures per year
- 2026: 4
-
@fastify/static vulnerable to Authorization Bypass via Non-Canonical URL Paths this entry
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