Vulnerability Details CVE-2021-22964
A redirect vulnerability in the `fastify-static` module version >= 4.2.4 and < 4.4.1 allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash `//` followed by a domain: `http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e`.A DOS vulnerability is possible if the URL contains invalid characters `curl --path-as-is "http://localhost:3000//^/.."`The issue shows up on all the `fastify-static` applications that set `redirect: true` option. By default, it is `false`.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 57.6%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
Products affected by CVE-2021-22964
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cpe:2.3:a:fastify:fastify-static:4.2.4
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cpe:2.3:a:fastify:fastify-static:4.3.0
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cpe:2.3:a:fastify:fastify-static:4.4.0