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

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-08 · updated 2026-09-10
Weakness: CWE-488

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 products

Auth0 react-native-auth0: from 5.0.0 before 5.11.1 — fixed in 5.11.1

How to fix

Upgrade to a fixed version: Auth0 react-native-auth0 5.11.1. Check the vendor advisory for mitigations.

References

https://trust.okta.com/security-advisories/improper-cache-isolation-in-auth0-react-native-auth0-sdk-web-platform-credential-management-cve-2026-84685

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