AIKIDO-2025-10755
@reduxjs/toolkit is vulnerable to Exposure of Resource to Wrong Sphere
75
High Risk
This Affects:
@reduxjs/toolkitTL;DR
Affected versions of this package may expose internal subscription state across multiple Redux store instances in SSR (Server-Side Rendering) environments due to a shared InternalMiddlewareState reference. This bug allows unintended data persistence or leakage of active subscription metadata between stores. The patch ensures that subscription data is correctly scoped per store using a WeakMap<Dispatch, Thing>, preventing cross-store data exposure and improving cleanup reliability.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you are using SSR.
Background info
@reduxjs/toolkit is vulnerable to Exposure of Resource to Wrong Sphere in versions 2.9.0 - 2.9.1.
How to fix this
Upgrade the @reduxjs/toolkit library to the patch version.
Are You Affected?
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