// For flags

CVE-2022-21721

DOS Vulnerability in next.js

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Next.js is a React framework. Starting with version 12.0.0 and prior to version 12.0.9, vulnerable code could allow a bad actor to trigger a denial of service attack for anyone using i18n functionality. In order to be affected by this CVE, one must use next start or a custom server and the built-in i18n support. Deployments on Vercel, along with similar environments where invalid requests are filtered before reaching Next.js, are not affected. A patch has been released, `next@12.0.9`, that mitigates this issue. As a workaround, one may ensure `/${locale}/_next/` is blocked from reaching the Next.js instance until it becomes feasible to upgrade.

Next.js es un framework de React. A partir de la versión 12.0.0 y versiones anteriores a 12.0.9, el código vulnerable podría permitir a un mal actor desencadenar un ataque de denegación de servicio para cualquiera que use la funcionalidad i18n. Para ser afectado por esta CVE, uno debe usar next start o un servidor personalizado y el soporte i18n incorporado. Los despliegues en Vercel, junto con entornos similares en los que son filtradas las peticiones no válidas antes de llegar a Next.js, no están afectados. Ha sido publicado un parche, "next@12.0.9", que mitiga este problema. Como medida de mitigación, puede asegurarse que "/${locale}/_next/" esté bloqueado para que no llegue a la instancia de Next.js hasta que sea posible la actualización

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-16 CVE Reserved
  • 2022-01-28 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-10-13 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Vercel
Search vendor "Vercel"
 Next.js
Search vendor "Vercel" for product "Next.js"
 >= 12.0.0 < 12.0.9
Search vendor "Vercel" for product "Next.js" and version " >= 12.0.0 < 12.0.9"
node.js
Affected