WS-2026-0139
Published:October 14, 2026
Updated:October 22, 2026
next 15.0.0 through 15.5.27 (and 15.0.0-rc/15.6.0 canaries) and 16.0.0 through 16.4.0: unauthenticated remote code execution in App Router applications whose "use cache" function returns multiple typed arrays, through the bundled React Server Components runtime (GHSA-673q-mjm6-r5xr)
Affected Packages
https://github.com/vercel/next.js.git (GITHUB):
Affected version(s) >=v15.0.0 <v15.5.28Fix Suggestion:
Update to version v15.5.28https://github.com/vercel/next.js.git (GITHUB):
Affected version(s) >=v16.0.0 <v16.4.1Fix Suggestion:
Update to version v16.4.1next (NPM):
Affected version(s) >=16.0.0 <16.4.1Fix Suggestion:
Update to version 16.4.1next (NPM):
Affected version(s) >=15.0.0 <15.5.28Fix Suggestion:
Update to version 15.5.28Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.5
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH