@nestjs/platform-fastify: Path-scoped middleware bypass via absolute-form request targets — GHSA-9C5C-9QCX-Q35Q

Summary

| Field | Value | | --- | --- | | Ecosystem | npm | | Package | `@nestjs/platform-fastify` | | Affected versions | `>= 12.0.0, < 12.0.2` and `< 11.2.4` | | Patched versions | `12.0.2` and `11.2.4` (upgrade to `12.0.3` / `11.2.5`) | ### Summary On the Fastify adapter, an HTTP request that uses an **absolute-form request target** (`GET http://host/path HTTP/1.1` instead of `GET /path HTTP/1.1`) reaches the route…

Timeline

Published by source

2026-09-30

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 7.4 out of 10.
• Review exposure for the affected product or family: npm: @nestjs/platform-fastify.

Product

npm: @nestjs/platform-fastify

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source

Evidence and provenance

Canonical advisory ID

GHSA-9C5C-9QCX-Q35Q

Source

GitHub

Vendor

GitHub

Published by source

2026-09-30

Last source activity

2026-09-30

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.