CVE-2026-84685Network attack vector

Cross-session token exposure via shared SSR cache

Published Sep 8, 2026 · Updated Sep 10, 2026

Cross-session data exposure in Auth0 react-native-auth0 5.0.0 through 5.11.0 allows remote attackers to retrieve cached tokens. The web credential manager stores tokens in module-level memory without scoping the cache to a user session, so a later request can receive another user's token. Exposure requires a persistent Node.js SSR process, useDPoP:false instead of the enabled default, and multiple users authenticating through that process.

CVSS severity6.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-session data exposure in Auth0 react-native-auth0 5.0.0 through 5.11.0 allows remote attackers to retrieve cached tokens. The web credential manager stores tokens in module-level memory without scoping the cache to a user session, so a later request can receive another user's token. Exposure requires a persistent Node.js SSR process, useDPoP:false instead of the enabled default, and multiple users authenticating through that process.

The record

CVE
CVE-2026-84685
Published
Sep 8, 2026
Updated
Sep 10, 2026
Vendor
Auth0
Product
react-native-auth0
Classifications
CWE-488, T1528
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.0.0 <5.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Auth0 · react-native-auth0version=5.0.0 <5.11.1

Published CVSS scores

6.5OktaCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-488Exposure of Data Element to Wrong Session
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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