CVE-2026-44580

Next.js is a React framework for building full-stack web applications. From 13.0.0 to before 15.5.16 and 16.2.5, applications that use beforeInteractive scripts together with untrusted content can be vulnerable to cross-site scripting. In affected versions, serialized script content was not escap...

CVE-2026-44580 Next.js: Cross-site scripting in beforeInteractive scripts with untrusted input

Next.js is a React framework for building full-stack web applications. From 13.0.0 to before 15.5.16 and 16.2.5, applications that use beforeInteractive scripts together with untrusted content can be vulnerable to cross-site scripting. In affected versions, serialized script content was not escap...

Cross-site Scripting (XSS)

Overview next is a react framework. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the beforeInteractive process, when untrusted input is embedded without proper escaping. An attacker can execute arbitrary JavaScript in a user's browser by injecting malicious...