CVE-2021-39178
XSS in Image Optimization API for Next.js
Impact
### Impact - **Affected:** All of the following must be true to be affected - Next.js between version 10.0.0 and 11.1.0 - The `next.config.js` file has [`images.domains`](https://nextjs.org/docs/basic-features/image-optimization#domains) array assigned - The image host assigned in [`images.domains`](https://nextjs.org/docs/basic-features/image-optimization#domains) allows user-provided SVG - **Not affected**: The `next.config.js` file has [`images.loader`](https://nextjs.org/docs/basic-features/image-optimization#loader) assigned to something other than default - **Not affected**: Deployments on [Vercel](https://vercel.com) are not affected ### Patches [Next.js v11.1.1](https://github.com/vercel/next.js/releases/tag/v11.1.1)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | next | >= 10.0.0, < 11.1.1 | 11.1.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vercel | Next.Js | from 10.0.0 before 11.1.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/vercel/next.js/releases/tag/v11.1.1
- https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7m
- https://github.com/advisories/GHSA-9gr3-7897-pp7m
- https://nvd.nist.gov/vuln/detail/CVE-2021-39178
- https://github.com/vercel/next.js/pull/28620
- https://github.com/vercel/next.js/commit/7afc97c5744b38bdf36aa7f87625f438224688aa