{"id":"GHSA-2xp9-vwfh-vxw4","summary":"Next.js: Unauthenticated Remote Code Execution in Image Optimization API when AVIF files are used","details":"A vulnerability in the underlying `libheif` library used by `sharp` which Next.js uses for image optimization can lead to remote code execution when AVIF files are optimized.\n\nUntil a fix has propagated, optimization of AVIF files is disabled.","modified":"2026-09-08T21:30:04.767189946Z","published":"2026-09-08T21:21:12Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-09-08T21:21:12Z","nvd_published_at":null,"cwe_ids":["CWE-1395"],"severity":"CRITICAL"},"references":[{"type":"WEB","url":"https://github.com/strukturag/libheif/security/advisories/GHSA-g89c-p67h-r497"},{"type":"WEB","url":"https://github.com/vercel/next.js/security/advisories/GHSA-2xp9-vwfh-vxw4"},{"type":"WEB","url":"https://github.com/vercel/next.js/pull/97875"},{"type":"WEB","url":"https://github.com/vercel/next.js/pull/97931"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/3a15b4ac6ac8e70b1a9b18ecc18e8434462899b3"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/409772ec807def20132d251ad48fd8d8ad4c73c2"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/7a5937a8ab20b89d0a961f75eabb11577f5d5998"},{"type":"PACKAGE","url":"https://github.com/vercel/next.js"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v15.5.24"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v16.3.3"}],"affected":[{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.0.0"},{"fixed":"15.5.24"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-2xp9-vwfh-vxw4/GHSA-2xp9-vwfh-vxw4.json"}},{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"16.0.0"},{"fixed":"16.3.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-2xp9-vwfh-vxw4/GHSA-2xp9-vwfh-vxw4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}]}