@fastify/busboy vulnerable to Denial of Service via prototype-named multipart part header
High-risk advisory
CVE-2026-19481
Summary
@fastify/busboy vulnerable to Denial of Service via prototype-named multipart part header
Why it matters
GitHub has published a reviewed security advisory for @fastify/busboy. Prioritize it with other application dependency updates, especially because EPSS places it in the 40% percentile.
Operator check
Check whether @fastify/busboy is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.5%; percentile: 40%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.