CVEvulnerability
CVE-2021-43803
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-12-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-20
Description
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 configurations
• vercel next.js (>= 11.1.0 < 11.1.3)
• vercel next.js (>= 12.0.0 < 12.0.5)
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- https://github.com/vercel/next.js/commit/6d98b4fb4315dec1badecf0e9bdc212a4272b264 Patch, Third Party Advisory
- https://github.com/vercel/next.js/pull/32080 Patch, Third Party Advisory
- https://github.com/vercel/next.js/releases/tag/v11.1.3 Release Notes, Third Party Advisory
- https://github.com/vercel/next.js/releases/v12.0.5 Release Notes, Third Party Advisory
- https://github.com/vercel/next.js/security/advisories/GHSA-25mp-g6fv-mqxx Patch, Third Party Advisory
- https://github.com/vercel/next.js/commit/6d98b4fb4315dec1badecf0e9bdc212a4272b264 Patch, Third Party Advisory
- https://github.com/vercel/next.js/pull/32080 Patch, Third Party Advisory
- https://github.com/vercel/next.js/releases/tag/v11.1.3 Release Notes, Third Party Advisory
- https://github.com/vercel/next.js/releases/v12.0.5 Release Notes, Third Party Advisory
- https://github.com/vercel/next.js/security/advisories/GHSA-25mp-g6fv-mqxx Patch, Third Party Advisory