Headline
GHSA-mpv3-g8m3-3fjc: Grafana vulnerable to Authentication Bypass by Spoofing
Grafana is validating Azure AD accounts based on the email claim.
On Azure AD, the profile email field is not unique and can be easily modified.
This leads to account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant app.
Grafana vulnerable to Authentication Bypass by Spoofing
Critical severity GitHub Reviewed Published Jun 22, 2023 to the GitHub Advisory Database • Updated Jun 27, 2023
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Grafana is validating Azure AD accounts based on the email claim. On Azure AD, the profile email field is not unique and can be easily modified. This leads to account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant app.