Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vercel | Next.Js | >= 13.0.0, < 15.5.16 |
Related Weaknesses (CWE)
References
- https://github.com/vercel/next.js/security/advisories/GHSA-gx5p-jg67-6x7hMitigationVendor Advisory
FAQ
What is CVE-2026-44580?
CVE-2026-44580 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2026-44580?
CVE-2026-44580 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44580?
Check the references section above for vendor advisories and patch information. Affected products include: Vercel Next.Js.