GHSA-HP6V-6JW7-GV2F Budibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified

Summary Budibase's OIDC SSO login links an incoming SSO identity to an existing Budibase account by email address alone, without ever checking the emailverified claim of the OIDC ID token. Budibase first tries to match the IdP sub; when that misses any fresh attacker IdP account it silently falls...

Improper Authentication

github.com/coder/coder is vulnerable to Improper Authentication. The vulnerability is due to improper OIDC email-based account linking and incorrect handling of the emailverified claim, which allows an attacker to authenticate with a malicious or unverified OIDC identity and take over another...

CVE-2026-9084 MISP OIDC authentication bypass via automatic email-based account linking under insecure IdP configurations

MISP’s OIDC authentication plugin allowed automatic linking of an OIDC identity to an existing local user account based on the email claim when the local account had no stored sub value. Under insecure or untrusted IdP configurations where email ownership is not enforced, an attacker with a valid...

CVE-2026-34456

Reviactyl is an open-source game server management panel built using Laravel, React, FilamentPHP, Vite, and Go. From version 26.2.0-beta.1 to before version 26.2.0-beta.5, a vulnerability in the OAuth authentication flow allowed automatic linking of social accounts based solely on matching email...

CVE-2026-34456 Reviactyl: OAuth account takeover via auto-linking

Reviactyl is an open-source game server management panel built using Laravel, React, FilamentPHP, Vite, and Go. From version 26.2.0-beta.1 to before version 26.2.0-beta.5, a vulnerability in the OAuth authentication flow allowed automatic linking of social accounts based solely on matching email...