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CVE-2026-44576

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CVE-2026-44576

Published: May 13, 2026

Modified: May 18, 2026

PUBLISHED

CVSS v3.1

5.4

MEDIUM

Description

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 shared caches do not correctly partition response variants. Under affected conditions, an attacker can cause an RSC response to be served from the original URL and poison shared cache entries so later visitors receive component payloads instead of the expected HTML. This vulnerability is fixed in 15.5.16 and 16.2.5.

VendorProductVersions

vercel

next.js

affected
>= 14.2.0, < 15.5.16
affected
>= 16.0.0, < 16.2.5

Weaknesses (CWE)

CWE-436

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

Low

References

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