CVE-2022-36046: Unexpected server crash in Next.js version 12.2.3

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-31 · updated 2026-06-17
Weakness: CWE-248

Description

Next.js is a React framework that can provide building blocks to create web applications. All of the following must be true to be affected by this CVE: Next.js version 12.2.3, Node.js version above v15.0.0 being used with strict `unhandledRejection` exiting AND using next start or a [custom server](https://nextjs.org/docs/advanced-features/custom-server). Deployments on Vercel ([vercel.com](https://vercel.com/)) are not affected along with similar environments where `next-server` isn't being shared across requests.

Affected products

Next.js: 12.2.3

References

https://github.com/vercel/next.js/releases/tag/v12.2.4
https://github.com/vercel/next.js/security/advisories/GHSA-wff4-fpwg-qqv3
https://github.com/vercel/next.js/releases/tag/v12.2.4
https://github.com/vercel/next.js/security/advisories/GHSA-wff4-fpwg-qqv3

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