CVE-2022-36046
Unexpected server crash in Next.js version 12.2.3
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. Deployments on Vercel (vercel.com) are not affected along with similar environments where next-server isn't being shared across requests.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Unexpected server crash in Next.js version 12.2.3
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. Deployments on Vercel (vercel.com) are not affected along with similar environments where next-server isn't being shared across requests.
- Record
CVE-2022-36046- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
EUVDEUVD-2022-6640
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. Deployments on Vercel (vercel.com) are not affected along with similar environments where next-server isn't being shared across requests.
- Record
EUVD-2022-6640- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wff4-fpwg-qqv3
Unexpected server crash in Next.js
Impact
When specific requests are made to the Next.js server it can cause an unhandledRejection in the server which can crash the process to exit in specific Node.js versions with strict unhandledRejection handling.
-
Affected: All of the following must be true to be affected by this CVE
- Node.js version above v15.0.0 being used with strict
unhandledRejectionexiting - Next.js version v12.2.3
- Using next start or a custom server
- Node.js version above v15.0.0 being used with strict
-
Not affected: Deployments on Vercel (vercel.com) are not affected along with similar environments where
next-serverisn't being shared across requests.
Patches
- Record
GHSA-wff4-fpwg-qqv3- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248, CWE-754
- Updated
- 2026-11-02
NVD
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. Deployments on Vercel (vercel.com) are not affected along with similar environments where next-server isn't being shared across requests.
- Record
CVE-2022-36046- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248, CWE-754
- Updated
- 2026-11-02
OSV
Unexpected server crash in Next.js version 12.2.3
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. Deployments on Vercel (vercel.com) are not affected along with similar environments where next-server isn't being shared across requests.
- Record
CVE-2022-36046- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
OSVGHSA-wff4-fpwg-qqv3
Unexpected server crash in Next.js
Impact
When specific requests are made to the Next.js server it can cause an unhandledRejection in the server which can crash the process to exit in specific Node.js versions with strict unhandledRejection handling.
-
Affected: All of the following must be true to be affected by this CVE
- Node.js version above v15.0.0 being used with strict
unhandledRejectionexiting - Next.js version v12.2.3
- Using next start or a custom server
- Node.js version above v15.0.0 being used with strict
-
Not affected: Deployments on Vercel (vercel.com) are not affected along with similar environments where
next-serverisn't being shared across requests.
Patches
- Record
GHSA-wff4-fpwg-qqv3- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248, CWE-754
- Updated
- 2026-11-02
OSVPYSEC-2022-43188
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. Deployments on Vercel (vercel.com) are not affected along with similar environments where next-server isn't being shared across requests.
- Record
PYSEC-2022-43188- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-36046 is a medium vulnerability (CVSS 5.3) in Vercel Next.js, published August 30, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.19%, the 68th percentile. Fixed in next 12.2.4.