PT-2026-141616

I'm still doing it for work, so I figured I'll keep sharing them here! You might wanna grab a cup of coffee for this one because it's a long one. CVE-2026-111497 9.2: The HTTP2Shell also called Node2Shell CVE in the Brotli decoder. Reachable in Keycloak if the experimental feature http-client:v2 ...

keycloak-services: keycloak-services: Unverified IdP email auto-linking enables account takeover

A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifyin...

keycloak-services: keycloak-services: Unverified IdP email auto-linking enables account takeover

A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifyin...

CVE-2026-97175

A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifyin...

CVE-2026-97175

A vulnerability exists in the idp-auto-link authenticator of the keycloak-services component, which manages user identity federation. The root cause is that Keycloak automatically links incoming identities from external providers to existing local accounts based on matching email addresses withou...

CVE-2026-97175 Keycloak-services: keycloak-services: unverified idp email auto-linking enables account takeover

A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifyin...

EUVD-2026-117611

A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifyin...

CVE-2026-97175

A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifyin...

PT-2026-137583

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the idp-auto-link authenticator of the keycloak-services component, which manages user identity federation. The issue occurs when Keycloak automatically links an incoming...

CVE-2026-84458 Zammad: Account takeover via unverified email matching during SSO auto-link

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when the "Automatic account link on initial logon" setting is enabled, Zammad binds an incoming third-party SSO identity to an existing local account by matching the email address the identity provider reports,...

CVE-2026-84458 Zammad: Account takeover via unverified email matching during SSO auto-link

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when the "Automatic account link on initial logon" setting is enabled, Zammad binds an incoming third-party SSO identity to an existing local account by matching the email address the identity provider reports,...

CVE-2026-84458 Zammad: Account takeover via unverified email matching during SSO auto-link

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when the "Automatic account link on initial logon" setting is enabled, Zammad binds an incoming third-party SSO identity to an existing local account by matching the email address the identity provider reports,...

CVE-2026-53516 Better Auth: Account takeover via OAuth auto-link to unverified pre-registered email

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, Better Auth's OAuth callback auto-link gate in handleOAuthUserInfo accepts implicit account linking when the OAuth provider asserts emailverified: true without requiring the local user row's emailVerified...

CVE-2026-53516 Better Auth: Account takeover via OAuth auto-link to unverified pre-registered email

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, Better Auth's OAuth callback auto-link gate in handleOAuthUserInfo accepts implicit account linking when the OAuth provider asserts emailverified: true without requiring the local user row's emailVerified...

CVE-2026-53516 Better Auth: Account takeover via OAuth auto-link to unverified pre-registered email

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, Better Auth's OAuth callback auto-link gate in handleOAuthUserInfo accepts implicit account linking when the OAuth provider asserts emailverified: true without requiring the local user row's emailVerified...

CVE-2026-53516

Summary: CVE-2026-53516 affects Better Auth (

Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth at a version 1.6.11 on the stable line, or any current next pre-release. - emailAndPassword.enabled: true is set in their application's betterAuth ... configuration. - At least one OAuth or SS...

GHSA-G38M-R43W-P2Q7 Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth at a version 1.6.11 on the stable line, or any current next pre-release. - emailAndPassword.enabled: true is set in their application's betterAuth ... configuration. - At least one OAuth or SS...

PT-2026-56300

Name of the Vulnerable Software and Affected Versions Better Auth versions prior to 1.6.11 Description Better Auth contains a pre-account hijacking flaw where the OAuth callback auto-link gate in the handleOAuthUserInfo function allows implicit account linking if the OAuth provider asserts email...

CVE-2026-44166 Pocketbase: Account pre-hijacking via OAuth2 unverfied->verified autolinking upgrade

Pocketbase is an open source web backend written in go. Prior to 0.22.42 and 0.37.4, in some situations, if an attacker knows the email address of the victim they can create and link an unverified PocketBase user in advance by authenticating with one of the OAuth2 app providers, e.g. "A". When th...