CVE-2026-18639

When Velociraptor is configured to use an OIDC IdP for authentication, it uses the email claim as a username. However, some IdP allow users to change the email claim without verification. Some IdPs do not set the "emailverified" claim and do not actually verify the email. This allows a user to...

CVE-2026-72772

n8n before 2.32.1 and before 2.31.5 is vulnerable to account takeover via the Token Exchange Embed Login feature. When a validly-signed incoming token was matched to a local account by its email claim, the service did not verify that the email claim was verified, nor that the trusted key's...

EUVD-2026-56098

n8n before 2.32.1 and before 2.31.5 is vulnerable to account takeover via the Token Exchange Embed Login feature. When a validly-signed incoming token was matched to a local account by its email claim, the service did not verify that the email claim was verified, nor that the trusted key's...

PT-2026-70235

When Velociraptor is configured to use an OIDC IdP for authentication, it uses the email claim as a username. However, some IdP allow users to change the email claim without verification. Some IdPs do not set the "email verified" claim and do not actually verify the email. This allows a user to...

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...

Incorrect Authorization

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to Incorrect Authorization in the authentication when the embed login feature is enabled and at least one trusted key source is configured. An attacker can gain unauthorized access to any existing user...

CVE-2026-9084

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-2026-9084

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-2026-9084

MISP OIDC authentication plugin is affected. The issue allows automatic linking of an OIDC identity to an existing local user account based on the email claim when the local account has no stored sub value. Under insecure/untrusted IdP configurations where email ownership isn’t enforced, an attac...

EUVD-2026-31123

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-2026-9084 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-2026-40574

A flaw was found in OAuth2 Proxy, a reverse proxy providing authentication using OAuth2 providers. A remote attacker can exploit an authorization bypass vulnerability by crafting a malicious email claim. This allows the attacker to bypass emaildomain restrictions, which are used to limit access t...

CVE-2026-40574

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Prior to 7.15.2, an authorization bypass exists in OAuth2 Proxy as part of the emaildomain enforcement option. An attacker may be able to authenticate with an email claim such as [email protected]@company.com and...

CVE-2026-40574 OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Prior to 7.15.2, an authorization bypass exists in OAuth2 Proxy as part of the emaildomain enforcement option. An attacker may be able to authenticate with an email claim such as [email protected]@company.com and...

grafana: account takeover possible when using Azure AD OAuth

A flaw was found in Grafana, which validates Azure AD accounts based on the email claim. On Azure AD, the profile email field is not unique across Azure AD tenants, which enables Grafana account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant AzureAD OAuth...

BIT-GRAFANA-2023-3128

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: account takeover possible when using Azure AD OAuth

A flaw was found in Grafana, which validates Azure AD accounts based on the email claim. On Azure AD, the profile email field is not unique across Azure AD tenants, which enables Grafana account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant AzureAD OAuth...

grafana: account takeover possible when using Azure AD OAuth

A flaw was found in Grafana, which validates Azure AD accounts based on the email claim. On Azure AD, the profile email field is not unique across Azure AD tenants, which enables Grafana account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant AzureAD OAuth...

SUSE CVE-2023-3128

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...

CVE-2023-3128

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...