What is CVE-2026-6410?

CVE-2026-6410 is a medium-severity vulnerability in Fastify Fastify-static, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-04-16.

How severe is CVE-2026-6410?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Path Traversal in Fastify Fastify-static

CVE-2026-6410

@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 contai…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.005 (39.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Fastify Fastify-static
@Fastify/static — versions 8.0.0, 9.1.1

Weakness classification (CWE)

CWE-22 — Path Traversal

References

ce714d77-add3-4f53-aff5-83d477b104bb (Mitigation, Vendor Advisory)
ce714d77-add3-4f53-aff5-83d477b104bb (Third Party Advisory)

Frequently asked questions

What is CVE-2026-6410?: CVE-2026-6410 is a medium-severity vulnerability in Fastify Fastify-static, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-04-16.
How severe is CVE-2026-6410?: Medium severity. CVSS v3 base score is 5.3 out of 10.