{"id":"CVE-2021-23597","aliases":["GHSA-qh73-qc3p-rjv2","SNYK-JS-FASTIFYMULTIPART-2395480"],"url":"https://o3.security/vulnerability/CVE-2021-23597","summary":"Uncaught Exception in fastify-multipart","details":"This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. **Note:** This is a bypass of CVE-2020-8136 (https://security.snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-1290382).","published":"2022-02-11T17:15:08.023Z","modified":"2026-08-07T15:13:58.063819Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.0203,"percentile":0.79298,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"fastify-multipart","fixedVersion":"5.3.1"}],"fix":{"url":"https://github.com/fastify/fastify-multipart/commit/a70dc7059a794589bd4fe066453141fc609e6066","label":"fastify/fastify-multipart@a70dc70"},"references":[{"type":"ADVISORY","url":"https://github.com/fastify/fastify-multipart/releases/tag/v5.3.1"},{"type":"FIX","url":"https://github.com/fastify/fastify-multipart/commit/a70dc7059a794589bd4fe066453141fc609e6066"},{"type":"FIX","url":"https://snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-2395480"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:13:58.063819Z"}}