CVE-2026-44582

Summary

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 Software

VendorProductVersion RangeStatus
vercelnext.js>= 13.4.6, < 15.5.16affected
vercelnext.js>= 16.0.0, < 16.2.5affected

Weaknesses

  • CWE-328: CWE-328: Use of Weak Hash

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References