CVE-2021-23597: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

February 11, 2022 (updated July 12, 2022)

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).

References

github.com/fastify/fastify-multipart/commit/a70dc7059a794589bd4fe066453141fc609e6066
github.com/fastify/fastify-multipart/releases/tag/v5.3.1
nvd.nist.gov/vuln/detail/CVE-2021-23597
snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-2395480

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