fastify security advisories

1 threat alert tracking vulnerabilities and security advisories that affect fastify products.

Vulnios monitors fastify CVE feeds, vendor advisories, CISA KEV listings, and exploit-prediction data continuously. Each alert below is enriched with severity, exploitation status, affected products, and a remediation path. Use this page to scan recent fastify security news in one place, or click into an individual alert for full detail.

Critical Vulnerability: CVE-2026-2880 — fastify — fastify\/middie
A vulnerability in @fastify/middie versions < 9.2.0 can result in authentication/authorization bypass when using path-scoped middleware (for example, app.use('/secret', auth)). When Fastify router no
criticalCVE-2026-2880

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fastify security advisories

Critical Vulnerability: CVE-2026-2880 — fastify — fastify\/middie

Track fastify exposure across your environment