cna.openjsf.org
https://cna.openjsf.org/security-advisories.html CVE-2026-7120
MEDIUM
@fastify/static vulnerable to Authorization Bypass via Non-Canonical URL Paths
Record summary
CVE-2026-7120 has a selected CVSS score of 5.3 (medium).
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableYes
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Jul 23, 2026 · Source: CVE List
Affected products and versions
2| Product | Source | Version range | Status |
|---|---|---|---|
@fastify/staticBrowse @fastify/static / @fastify/staticDefault status: unaffected | CVE List | Before 10.1.2 | affected |
| 10.1.2 | unaffected | ||
@fastify/staticBrowse npm / @fastify/static | GitHub Advisory | Before 10.1.2 · Fixed in 10.1.2 | affected |
References
6github.com
https://github.com/fastify/fastify-static github.com
https://github.com/fastify/fastify-static/commit/878c72e920fabacf7e37739bf78057044717bf63 github.com
https://github.com/fastify/fastify-static/releases/tag/v10.1.2 github.com
https://github.com/fastify/fastify-static/security/advisories/GHSA-8pvw-jcv7-9cmj nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-7120