VULNERABILITY INTELLIGENCE

CVE-2026-44581

CVSS score4.7 MEDIUM
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-05-13
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

Next.js is a React framework for building full-stack web applications. From 13.4.0 to before 15.5.16 and 16.2.5, App Router applications that rely on CSP nonces can be vulnerable to stored cross-site scripting when deployed behind shared caches. In affected versions, malformed nonce values derived from request headers could be reflected into rendered HTML in an unsafe way, allowing an attacker to poison cached responses and cause script execution for later visitors. This vulnerability is fixed in 15.5.16 and 16.2.5.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references