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CVE-2026-44576

Next.js: Cache poisoning in React Server Component responses

Published: May 13, 2026Updated: May 14, 2026 Sources: CVE List NVD BDUCWE-436
5.4MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 83.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:CC:NI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-436

Affected Products

Vercel
commercial·US
Next.jsLibraryLibrary
OSS Libraries / web-framework
and 1 more affected products View all →

Exploitability

Official Patch Available
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References

https://github.com/vercel/next.js/security/advisories/GHSA-wfc6-r584-vfw7
github.com
News mentions
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