EUVD-2026-101746

Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider's OIDC issuer or SAML entity ID and assert a victim'...

CVE-2026-110863

Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider's OIDC issuer or SAML entity ID and assert a victim'...

CVE-2026-110863

The @better-auth/sso library (versions 1.7.0-rc.2 before 1.7.3 ) contains an authentication bypass vulnerability. The root cause is that the account lookup mechanism ignores the providerId , allowing an authenticated attacker to register a personal SSO provider using a legitimate provider's OIDC ...

CVE-2026-110863 Better Auth @better-auth/sso before 1.7.3 Authentication Bypass via Personal SSO Providers

Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider's OIDC issuer or SAML entity ID and assert a victim'...

CVE-2026-101149 Security Advisory 0186

Insufficient validation of OIDC SSO provider configuration could allow a user with specific high privileges to direct requests to arbitrary destinations...

CVE-2026-101149

A vulnerability exists due to insufficient validation of OIDC SSO provider configuration . This flaw could allow a user with specific high privileges to perform a Server-Side Request Forgery (SSRF) by directing requests to arbitrary destinations. No specific software versions, affected components...

CVE-2026-101149: Server-Side Request Forgery (SSRF)

Insufficient validation of OIDC SSO provider configuration could allow a user with specific high privileges to direct requests to arbitrary destinations...

PT-2026-107131

Insufficient validation of OIDC SSO provider configuration could allow a user with specific high privileges to direct requests to arbitrary destinations...

PT-2026-97857

Name of the Vulnerable Software and Affected Versions Logto versions 1.31.0 through 1.41.0 Description Account API handlers in packages/core/src/routes/account/third-party-tokens.ts allow a caller with a same-user access token containing only the openid scope to retrieve stored social or enterpri...

CVE-2026-88864

Capgo capgo.app fails to restrict direct write access to the public.ssoproviders table exposed through Supabase PostgREST. A holder of an ordinary Capgo full API key can insert a row with status='active' and enforcesso=true, bypassing the intended backend SSO provisioning route...

CVE-2026-88864 Capgo SSO Provider Authentication Bypass via PostgREST Direct Write

Capgo capgo.app fails to restrict direct write access to the public.ssoproviders table exposed through Supabase PostgREST. A holder of an ordinary Capgo full API key can insert a row with status='active' and enforcesso=true, bypassing the intended backend SSO provisioning route...

CVE-2026-88864 Capgo SSO Provider Authentication Bypass via PostgREST Direct Write

Capgo capgo.app fails to restrict direct write access to the public.ssoproviders table exposed through Supabase PostgREST. A holder of an ordinary Capgo full API key can insert a row with status='active' and enforcesso=true, bypassing the intended backend SSO provisioning route...

CVE-2026-67328: Improper Neutralization of Input During Web Page Generation

@better-auth/sso versions before 1.6.21 contain multiple authentication bypass vulnerabilities in SSO provider handling that allow attackers to sign in as arbitrary users. Attackers can exploit domain verification parsing mismatches, orphaned provider accounts, unbound SAML assertions, or reflect...

CVE-2026-53515

Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin's POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row a...

CVE-2026-53515 Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso

Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin's POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row a...

CVE-2026-53513 Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/sso provider registration

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin's POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: tru...

CVE-2026-53513

CVE-2026-53513 affects the @better-auth/sso plugin for Better Auth. When skipDiscovery: true is set, POST /sso/register and POST /sso/update-provider may store attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs without origin validation, leading to server-side r...

PT-2026-60243

Name of the Vulnerable Software and Affected Versions Better Auth versions 1.2.10 through 1.6.10 Description The @better-auth/sso plugin contains a flaw where the registerSSOProvider function in the 'POST /sso/register' endpoint only verifies organization membership without requiring an owner or...

CVE-2026-56313

Capgo before 12.128.2 contains a cross-organization account disruption vulnerability in the SSO prelink endpoint that allows enterprise administrators to delete password identities of users in foreign organizations. Attackers with org.updatesettings permission and an active SSO provider can call...

CVE-2025-65107: Cross-Site Request Forgery (CSRF)

Langfuse is an open source large language model engineering platform. In versions from 2.95.0 to before 2.95.12 and from 3.17.0 to before 3.131.0, in SSO provider configurations without an explicit AUTH CHECK setting, a potential account takeover may happen if an authenticated user is made to cal...