Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.0%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-6410
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cpe:2.3:a:fastify:fastify-static:8.0.0
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cpe:2.3:a:fastify:fastify-static:8.0.1
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cpe:2.3:a:fastify:fastify-static:8.0.2
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cpe:2.3:a:fastify:fastify-static:8.0.3
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cpe:2.3:a:fastify:fastify-static:8.0.4
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cpe:2.3:a:fastify:fastify-static:8.1.0
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cpe:2.3:a:fastify:fastify-static:8.1.1
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cpe:2.3:a:fastify:fastify-static:8.2.0
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cpe:2.3:a:fastify:fastify-static:8.3.0
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cpe:2.3:a:fastify:fastify-static:9.0.0
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cpe:2.3:a:fastify:fastify-static:9.1.0