{"id":"GHSA-9gr3-7897-pp7m","summary":"XSS in Image Optimization API for Next.js","details":"### Impact\n- **Affected:** All of the following must be true to be affected\n    - Next.js between version 10.0.0 and 11.1.0\n    - The `next.config.js` file has [`images.domains`](https://nextjs.org/docs/basic-features/image-optimization#domains) array assigned\n    - The image host assigned in [`images.domains`](https://nextjs.org/docs/basic-features/image-optimization#domains) allows user-provided SVG\n- **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\n- **Not affected**: Deployments on [Vercel](https://vercel.com) are not affected\n\n### Patches\n[Next.js v11.1.1](https://github.com/vercel/next.js/releases/tag/v11.1.1)\n\n","aliases":["CVE-2021-39178"],"modified":"2026-07-08T06:27:32.575463730Z","published":"2021-09-01T18:24:22Z","database_specific":{"cwe_ids":["CWE-79"],"github_reviewed_at":"2021-08-31T20:01:51Z","github_reviewed":true,"nvd_published_at":"2021-08-31T00:15:00Z","severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39178"},{"type":"WEB","url":"https://github.com/vercel/next.js/pull/28620"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/7afc97c5744b38bdf36aa7f87625f438224688aa"},{"type":"PACKAGE","url":"https://github.com/vercel/next.js"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v11.1.1"}],"affected":[{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.0.0"},{"fixed":"11.1.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-9gr3-7897-pp7m/GHSA-9gr3-7897-pp7m.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}