CVE-2026-80192 better-auth SSO before 1.6.27 Domain Ownership Authentication Bypass

@better-auth/sso before 1.6.27 and before 1.4.8 in the 1.4.x line and before 1.7.0-rc.5 in the 1.7 prerelease line contains two domain-ownership flaws. When domain verification is disabled, automatic organization assignment accepts unverified provider domains, allowing an authenticated organizati...

CVE-2026-80192

@better-auth/sso contains two domain-ownership authentication bypass flaws affecting versions before 1.6.27 (and before 1.4.8 in the 1.4.x line, before 1.7.0-rc.5 in the 1.7 prerelease line). When domain verification is disabled , an authenticated organization owner/administrator can register an ...

CVE-2026-80192 better-auth SSO before 1.6.27 Domain Ownership Authentication Bypass

@better-auth/sso before 1.6.27 and before 1.4.8 in the 1.4.x line and before 1.7.0-rc.5 in the 1.7 prerelease line contains two domain-ownership flaws. When domain verification is disabled, automatic organization assignment accepts unverified provider domains, allowing an authenticated organizati...

BIT-KEYCLOAK-2026-15571 Flaw in the legacy client-initiated account-linking endpoint of Keycloak

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

PT-2026-81905

Name of the Vulnerable Software and Affected Versions @better-auth/sso versions prior to 1.4.8 @better-auth/sso versions prior to 1.6.27 @better-auth/sso versions prior to 1.7.0-rc.5 Description Two domain-ownership flaws exist when the SSO plugin is active. If domain verification is disabled,...

Suspected Russian Hackers Abuse Google OAuth and WhatsApp Linking to Hijack Accounts

Three distinct suspected Russian cyber espionage threat clusters have been observed leveraging legitimate authentication flows to single out individuals working in academia, aerospace and defense, governments, and think tanks across Europe, as well as academia and think tanks within the U.S. Thes...

Keycloak 26.6.x < 26.6.6 Multiple Vulnerabilities

The version of Keycloak installed on the remote host is 26.6.x prior to 26.6.6. It is, therefore, affected by multiple vulnerabilities: - A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak. The mechanism used to protect the account-linking process from unauthoriz...

CVE-2026-15571

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

CVE-2026-15571 Keycloak-services: keycloak-services: predictable account-linking hash enables account takeover via malicious oidc client

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

CVE-2026-15571

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

keycloak-services: keycloak-services: Predictable account-linking hash enables account takeover via malicious OIDC client

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

Predictable from Observable State

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Predictable from Observable State through the legacy client-initiated account linking endpoint in...

ANT-2026-7WJV60DR · supabase/auth · other

other medium Severity Claude medium · Security research firm - · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-7WJV60DR: Manual identity linking enables account takeover via unverified email When...

ANT-2026-J5P6B5WQ · supabase/auth · other

other medium Severity Claude medium · Security research firm - · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-J5P6B5WQ: Banned user obtains fresh sessions via identity linking In internal/api/identity.go,...

PT-2026-78234

Name of the Vulnerable Software and Affected Versions 4gaBoards versions prior to 3.3.8 Description An issue exists when registrationEnabled, localRegistrationEnabled, and ssoRegistrationEnabled are enabled and Google, GitHub, Microsoft, or OIDC SSO is configured. The 'POST /api/register' endpoin...

CVE-2026-15571: Predictable from Observable State

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

PT-2026-77310

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the legacy client-initiated account-linking endpoint of Keycloak. The protection mechanism for the account-linking process uses a predictable hash, which a malicious OpenID...

CVE-2026-9859 Mattermost Boards plugin didn’t enforce role-based authorization on board channel link allowing board editors to expose boards to arbitrary channels

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fail to enforce PermissionManageBoardRoles on the channelId field of the batch endpoint, which allows an authenticated board editor to relink any board they can edit to an arbitrary channel via a crafted PATCH request...

CVE-2026-16047

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fail to validate that users have read access to a channel before linking a board to it, which allows an authenticated attacker to discover the membership of private channels on the same team via creating, patching, importing...

CVE-2026-16047 Board channel linking without read channel permission validation

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fail to validate that users have read access to a channel before linking a board to it, which allows an authenticated attacker to discover the membership of private channels on the same team via creating, patching, importing...