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Description

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.

PUBLISHED Reserved 2026-05-06 | Published 2026-05-13 | Updated 2026-05-13 | Assigner GitHub_M




MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

>= 13.0.0, < 15.5.16
affected

>= 16.0.0, < 16.2.5
affected

References

github.com/...ext.js/security/advisories/GHSA-gx5p-jg67-6x7h

cve.org (CVE-2026-44580)

nvd.nist.gov (CVE-2026-44580)

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