CVE-2026-119349
Published:November 03, 2026
Updated:November 04, 2026
<!-- https://linear.app/vercel/issue/NSEC-546 --> Next.js App Router applications that pass binary arguments (such as Uint8Array or Blob values) to functions using the `use cache` directive can produce identical cache keys for distinct arguments, allowing cached results to be shared across users — cross-user disclosure of cached data or cache poisoning. This affects applications using `use cache` with binary arguments.
Affected Packages
https://github.com/vercel/next.js.git (GITHUB):
Affected version(s) >=v16.5.0-canary.0 <v16.5.0-canary.39Fix Suggestion:
Update to version v16.5.0-canary.39https://github.com/vercel/next.js.git (GITHUB):
Affected version(s) >=v15.0.0 <v16.4.5 || >=v15.6.0-canary.0 <v16.4.5 || =v16.0.0-beta.0 <v16.4.5 || >=v16.0.0 <v16.4.5Fix Suggestion:
Update to version v16.4.5next (NPM):
Affected version(s) =16.0.0-beta.0 <16.4.5 || >=15.6.0-canary.0 <16.4.5 || >=16.0.0 <16.4.5 || >=15.0.0 <16.4.5Fix Suggestion:
Update to version 16.4.5next (NPM):
Affected version(s) >=16.5.0-canary.0 <16.5.0-canary.39Fix Suggestion:
Update to version 16.5.0-canary.39Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Use of Cache Containing Sensitive Information