CVE catalog

CVE-2026-44576

Next.js is a React framework for building full-stack web applications. From 14.2.0 to before 15.5.16 and 16.2.5, applications using React Server Components can be vulnerable to cache poisoning when sh

[CVE catalog]

Severity
Medium · CVSS 5.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L
Published
Source
[NVD] · [CVE record]
EPSS
0.29% · Oct 25, 2026

A flaw was found in Next.js, a React framework for building web applications. This vulnerability, related to cache poisoning, affects applications utilizing React Server Components (RSC) when shared caches fail to properly partition response variants. A remote attacker can exploit this by causing an RSC response to be served from its original URL, thereby poisoning shared cache entries. As a result, subsequent visitors may receive unexpected component payloads instead of the intended HTML content. Next.js: Next.js: Cache poisoning vulnerability in React Server Components The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Cpenext.jsNot reported15.5.16fixed
Cpenext.jsNot reported16.2.5fixed
Cpenext.jsNot reported16.2.5fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Cpenext.jscpeNot reported15.5.16Not reportedNot reportedNot reported
Cpenext.jscpeNot reported16.2.5Not reportedNot reportedNot reported
Cpenext.jscpeNot reported16.2.5Not reportedNVD-CVE-2026-44576Not reported

OpenFactory catalog packages

No matching packages in this catalog.

Observed:

References

[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]