{"schemaVersion":3,"id":"CVE-2026-2880","aliases":["GHSA-8p85-9qpw-fwgw"],"status":"published","duplicateOf":null,"title":null,"description":"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)).\n\nWhen Fastify router normalization options are enabled (such as ignoreDuplicateSlashes, useSemicolonDelimiter, and related trailing-slash behavior), crafted request paths may bypass middleware checks while still being routed to protected 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