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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.

PUBLISHED Reserved 2026-05-06 | Published 2026-05-13 | Updated 2026-05-14 | Assigner GitHub_M




LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-328: Use of Weak Hash

Product status

>= 13.4.6, < 15.5.16
affected

>= 16.0.0, < 16.2.5
affected

References

github.com/...ext.js/security/advisories/GHSA-vfv6-92ff-j949

cve.org (CVE-2026-44582)

nvd.nist.gov (CVE-2026-44582)

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