{"action":"Upgrade next to 16.1.7 or later.","affected":[{"fixed":"16.1.7","introduced":"16.0.1"}],"component":"next","cve_ids":["CVE-2026-27977"],"ecosystem":"npm","epss":0.00178,"exploited":false,"fixed_versions":["16.1.7"],"ghsa_id":"GHSA-jcc7-9wpm-mj36","id":"tcs_01M5KFXNGRCM0GAQ7SAKAA8VR1","modified_at":"2026-03-25T19:49:01.129152Z","published_at":"2026-03-17T15:29:48Z","references":["https://osv.dev/vulnerability/GHSA-jcc7-9wpm-mj36","https://github.com/vercel/next.js/security/advisories/GHSA-jcc7-9wpm-mj36","https://nvd.nist.gov/vuln/detail/CVE-2026-27977","https://github.com/vercel/next.js/commit/862f9b9bb41d235e0d8cf44aa811e7fd118cee2a","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v16.1.7"],"severity":{"label":"low"},"sources":[{"source":"osv","source_id":"GHSA-jcc7-9wpm-mj36","url":"https://osv.dev/vulnerability/GHSA-jcc7-9wpm-mj36"}],"summary":"Next.js: null origin can bypass dev HMR websocket CSRF checks"}