@fastify/middie vulnerable to path-scoped middleware bypass via scope prefix mismatch
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| @fastify/middie | @fastify/middie | unaffected |
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No data available yet.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.314% probability within 30 days)
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ssvc
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| Description | @fastify/middie is the Express-style middleware engine for Fastify. In versions from 9.0.0 through 9.3.5, the use() function joined a path-scoped middleware's mount path to the plugin scope prefix in a way that could diverge from the path Fastify's router serves, most often when the scope prefix ended in a slash, and also for array mount paths and for mount paths written without a leading slash. When the two paths disagreed, the middleware was silently skipped while the route handler still ran, so path-scoped middleware such as authentication, authorization, or rate limiting could be bypassed by a single unauthenticated request. The issue is fixed in @fastify/middie 9.3.6, and users should upgrade to 9.3.6 or later. As a workaround, enforce authorization in a Fastify hook such as preHandler that runs after the router has resolved the request. | |
| Title | @fastify/middie vulnerable to path-scoped middleware bypass via scope prefix mismatch | |
| Weaknesses | CWE-436 | |
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cvssV3_1
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