Account Linking Vulnerability in Auth0 Extension
CVE-2025-46345

6.9MEDIUM

Key Information:

Vendor

Auth0-extensions

Status
Auth0-account-link-extension
Vendor
CVE Published:
1 May 2025

What is CVE-2025-46345?

The Auth0 Account Link Extension, designed for linking user accounts seamlessly, contains a vulnerability in versions 2.3.4 to 2.6.6. This issue arises because the extension fails to verify the signature of provided JSON Web Tokens (JWTs). An attacker could exploit this flaw by submitting a forged token, potentially gaining unauthorized access to sensitive user information. To mitigate this risk, users should upgrade to version 3.0.0 or later, where the vulnerability has been addressed and patched.

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Affected Version(s)

auth0-account-link-extension >= 2.3.4, < 2.6.7

References

https://github.com/auth0-extensions/auth0-account-link-ex...
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https://github.com/auth0-extensions/auth0-account-link-ex...
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CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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