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 un…
Published: 2026-05-13 · CVSS: 6.1 · CVSS 3.1
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 escaped safely before being embedded into the document, which could allow attacker-controlled input to break out of the intended script context and execute arbitrary JavaScript in a visitor's browser. This vulnerability is fixed in 15.5.16 and 16.2.5.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7