Unexpected server crash in Next.js
CVE-2021-43803

7.5HIGH

Key Information:

Vendor
Vercel
Status
Next.js
Vendor
CVE Published:
10 December 2021

Summary

Next.js is a React framework. In versions of Next.js prior to 12.0.5 or 11.1.3, invalid or malformed URLs could lead to a server crash. In order to be affected by this issue, the deployment must use Next.js versions above 11.1.0 and below 12.0.5, Node.js above 15.0.0, and next start or a custom server. Deployments on Vercel are not affected, along with similar environments where invalid requests are filtered before reaching Next.js. Versions 12.0.5 and 11.1.3 contain patches for this issue.

Affected Version(s)

next.js >= 11.1.0, < 11.1.3 < 11.1.0, 11.1.3

next.js >= 12.0.0, < 12.0.5 < 12.0.0, 12.0.5

References

https://github.com/vercel/next.js/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/vercel/next.js/pull/32080
x_refsource_MISC
https://github.com/vercel/next.js/commit/6d98b4fb4315dec1...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.