Vulnerability · Published Apr 16, 2026 · Assigned by openjs
CVE-2026-6410@fastify/static vulnerable to path traversal in directory listing
Medium 5.3
In plain English
A medium-severity path traversal in @fastify/static from @fastify/static. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
@fastify/static versions 8.0.0 through 9.1.0 allow path traversal when directory listing is enabled via the list option. The dirList.path() function resolves directories outside the configured static root using path.join() without a containment check. A remote unauthenticated attacker can obtain directory listings for arbitrary directories accessible to the Node.js process, disclosing directory and file names. File contents are not disclosed. Upgrade to @fastify/static 9.1.1 to fix this issue. As a workaround, disable directory listing by removing the list option from the plugin configuration.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @fastify/static | 9.1.1 | GHSA-pr96-94w5-mx2h |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| @fastify/static | @fastify/static | 8.0.0 – before 9.1.1 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N