fastify
HighnpmCVE-2026-84469
What to do
Update fastify to 5.12.2 or later.
npm install fastify@5.12.2
A security flaw affects the npm package fastify. Affected versions: < 5.12.2. Fixed from version 5.12.2. CVSS score 7.5.
What the flaw allows: See the advisory for the impact details.
- Package
- fastify
- Ecosystem
- npm (JavaScript)
- Class
- Other
- Affected versions
- < 5.12.2
- CVSS
- 7.5
- Published on
- September 30, 2026
Sources
Entry built automatically from the cited security advisory, with no model rewriting. Acknowledged by the organisation or vendor, notified to an authority, or established by two independent sources.