A low-severity vulnerability in Next.js has been fixed in version 15.2.2. This issue may have allowed limited source code exposure when the dev server was running with the App Router enabled. The vulnerability only affects local development environments and requires the user to visit a malicious webpage while npm run dev
is active.
Because the mitigation is potentially a breaking change for some development setups, to opt-in to the fix, you must configure allowedDevOrigins
in your next config after upgrading to a patched version. Learn more.
Learn more: https://vercel.com/changelog/cve-2025-48068
Thanks to sapphi-red and Radman Siddiki for responsibly disclosing this issue.
{ "github_reviewed_at": "2025-05-28T21:52:13Z", "severity": "LOW", "nvd_published_at": "2025-05-30T04:15:48Z", "github_reviewed": true, "cwe_ids": [ "CWE-1385" ] }