Improper Cache Isolation in auth0/react-native-auth0 SDK Web Platform Credential Management CVE-2026-84685 - Sep 8, 2026

Description

The react-native-auth0 SDK’s web platform implementation does not scope its in-memory token cache to individual user sessions when operating in a server-side rendering (SSR) environment where module state persists across HTTP requests. Under the listed preconditions, tokens cached in module memory can be retrieved across subsequent requests processed by the same server runtime.

Affected product and versions

Customers running react-native-auth0 version 5.0.0 through 5.11.0 are affected.

Preconditions

This applies if the following preconditions are present:

The application uses the react-native-auth0 SDK on the web platform,
The application runs in a Node.js SSR environment,
The SDK is explicitly configured with useDPoP: false, overriding the default DPoP-enabled behavior,
Multiple users authenticate through the same server process.

Fix

Upgrade auth0/react-native-auth0 to version 5.11.1 or greater

CVE details

CVE ID	CVE-2026-84685
Published Date	2026-09-08
Vulnerability Type	Cross-Session Data Exposure
CWE	CWE-488 – Exposure of Data Element to Wrong Session
CVSS v3	Score: 6.5 Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

References

Improper Cache Isolation in auth0/react-native-auth0 SDK Web Platform Credential Management