CVE-2026-84428
1 advisory.
npm/fastify CVE-2026-84428: high 7.5, EPSS 0.52%
fastify vulnerable to header validation bypass via incomplete schema case normalization
Action: Upgrade fastify to 5.12.2 or later.
npm i fastify@5.12.2Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.12.2 | - |
Fixed versions
| 5.12.2 |
Sources
- osv: GHSA-9q9j-q6p8-xq58
- https://github.com/fastify/fastify/security/advisories/GHSA-9q9j-q6p8-xq58
- https://nvd.nist.gov/vuln/detail/CVE-2026-84428
- https://github.com/fastify/fastify/commit/179619c8e99d54924309b9933402151ef9af37e0
- https://cna.openjsf.org/security-advisories.html
- https://github.com/fastify/fastify
- https://github.com/fastify/fastify/releases/tag/v5.12.2
CVE-2026-84428 · published · modified · JSON