{"id":"GHSA-39w2-rjm5-chcv","revision":"8dd674abb3f948009e9e42e79bc5dec9","records":[{"revision":"8dd674abb3f948009e9e42e79bc5dec9","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-39w2-rjm5-chcv","aliases":["CVE-2026-94486"],"title":"Next.js has information disclosure in development server's Model Context Protocol endpoint","description":"The Next.js development server (`next dev`) exposes a Model Context Protocol endpoint that does not verify which website a request originates from, allowing a malicious website visited by the developer to read sensitive development data — including the project's location on disk, source code snippets from error reports, the route inventory, and development logs. Only applications run with `next dev` are affected. Production deployments do not serve this endpoint.","state":0,"publishedAt":"2026-10-07T20:31:51+00:00","modifiedAt":"2026-10-07T20:45:05.3420445+00:00","affected":[{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"16.0.0"},{"kind":"fixed","version":"16.3.8"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-39w2-rjm5-chcv","https://nvd.nist.gov/vuln/detail/CVE-2026-94486","https://github.com/vercel/next.js/commit/2d9f50a409312696145b82b3157aadb6b1fef476","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v16.3.8"],"sourceUrl":"https://github.com/advisories/GHSA-39w2-rjm5-chcv","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-39w2-rjm5-chcv","identifiers":["GHSA-39w2-rjm5-chcv","CVE-2026-94486"]},"retained":false,"historicalAffected":[]}],"coverage":[]}