Interpretation Conflict in Next.js - #VU130280
Published: May 6, 2026
Vulnerability identifier: #VU130280
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-436
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Next.js
Next.js
Software vendor:
vercel
vercel
Description
The vulnerability allows a remote attacker to cause cache poisoning that results in component payloads being served instead of the expected HTML.
The vulnerability exists due to interpretation conflict in React Server Component response handling when shared caches do not correctly partition response variants. A remote attacker can cause an RSC response to be served from the original URL to cause cache poisoning that results in component payloads being served instead of the expected HTML.
The issue affects applications using React Server Components with shared caches under affected conditions.
Remediation
Install security update from vendor's website.