{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "10.0.0"
              },
              {
                "fixed": "11.1.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "118ab7992bc8f7a7e5a7bb996510d9b56ffe4f68"
            },
            {
              "fixed": "804971fd9a49dfd009f7339dd8bf4bc32e6eb02c"
            }
          ],
          "repo": "https://github.com/vercel/next.js",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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.",
  "id": "CVE-2021-39178",
  "modified": "2026-03-13T21:50:28.937727994Z",
  "published": "2021-08-31T00:15:07.203Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/vercel/next.js/releases/tag/v11.1.1"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7m"
    }
  ],
  "related": [
    "GHSA-9gr3-7897-pp7m"
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}