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CVE PROGRAM SOURCE RECORD3.7 Low

CVE-2026-44582

Next.js: Cache poisoning via collisions in React Server Component cache-busting

Description

Next.js is a React framework for building full-stack web applications. From 13.4.6 to before 15.5.16 and 16.2.5, React Server Component responses can be vulnerable to cache poisoning in deployments that rely on shared caches with insufficient response partitioning. In affected conditions, collisions in the _rsc cache-busting value can allow an attacker to poison cache entries so users receive the wrong response variant for a given URL. This vulnerability is fixed in 15.5.16 and 16.2.5.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

vercel next.js

  • >= 13.4.6, < 15.5.16affected
  • >= 16.0.0, < 16.2.5affected

References