7.5
High
CVE-2021-39178 Next.js is a React framework
Description
Next.js is a React framework. Versions of Next.js between 10.0.0 and 11.0.0 contain a cross-site scripting vulnerability. In order for an instance to be affected by the vulnerability, the `next.config.js` file must have `images.domains` array assigned and the image host assigned in `images.domains` must allow user-provided SVG. If the `next.config.js` file has `images.loader` assigned to something other than default or the instance is deployed on Vercel, the instance is not affected by the vulnerability. The vulnerability is patched in Next.js version 11.1.1.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| next.js 10.0 | 10.0.0 → < 11.1.1 | 11.1.1 |
Other CVEs of next.js
The 57 CVEs of next.js →
CVE-2026-94482
Next.js is a React framework for building full-stack web applications
8.2
High
CVE-2026-94484
Next.js is a React framework for building full-stack web applications
6.3
Medium
CVE-2026-94485
Next.js is a React framework for building full-stack web applications
6.3
Medium
CVE-2026-94483
Next.js is a React framework for building full-stack web applications
8.3
High