AIKIDO-2026-10099
ueberauth_microsoft is vulnerable to Insufficient Verification of Data Authenticity
45
Medium Risk
This Affects:
ueberauth_microsoftTL;DR
Affected versions of this package assume that the email field returned by the Microsoft OAuth provider is a verified email address, which can be unsafe because that attribute can be modified in Azure without actual verification, potentially allowing authentication as an arbitrary user. The patch updates the strategy to rely on a more trustworthy identifier (userPrincipalName) rather than unverified email, preventing this class of authentication spoofing.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
ueberauth_microsoft is vulnerable to Insufficient Verification of Data Authenticity in versions 0.1.0 - 0.24.0.
How to fix this
Upgrade the ueberauth_microsoft library to the patch version.
Are You Affected?
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SOC 2Compliant
ISO 27001Compliant