Opaque, Interoperable Passkey Records (and a Go API)

Passkeys are the most important thing happening in information security right now because they are the only principled solution to the overwhelming effectiveness of phishing attacks. Just like memory safety is the only principled solution to memory corruption attacks. Unfortunately, implementing...

CVE-2026-55377 Logto: Account Center MFA management step-up bypass via WebAuthn registration verification

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's Account Center step-up check accepted any active verification record that belonged to the current user and had isVerified === true. A WebAuthn registration verification record for binding a new...

PT-2026-57282

Name of the Vulnerable Software and Affected Versions Logto versions prior to 1.41.0 Description The Account Center step-up check accepts any active verification record belonging to the current user where isVerified is set to true. An attacker with an existing Account API bearer token can create...

GHSA-F66Q-9RF6-8795 Flask-Security-Too: WebAuthn reauthentication freshness bypass via cross-user assertion

Summary Flask-Security-Too 5.8.0 and 5.8.1 mark a session as reauthentication-fresh after processing a WebAuthn assertion whose proven credential belongs to a different user than the currently authenticated session user. The check that GHSA-97r5-pg8x-p63p added on the OAuth reauthentication path...

GHSA-GQ4G-FPC9-VJFQ Webauthn: SimpleFakeCredentialGenerator with an empty secret produces predictable fake credentials, weakening username enumeration protection

Impact Webauthn\SimpleFakeCredentialGenerator is the library-provided default implementation of the FakeCredentialGenerator interface. It returns a stable list of decoy PublicKeyCredentialDescriptor objects for a given username so that an assertion request for an unknown user looks the same as a...

CVE-2026-11883

The WebAuthn Provider for Two Factor WordPress plugin before 2.5.6 does not correctly validate the second-factor authentication response, allowing an attacker who already knows a user's password to bypass the two-factor authentication requirement by submitting a malformed request...

CVE-2026-11883

CVE-2026-11883 affects the WebAuthn Provider for Two Factor WordPress plugin (before 2.5.6). The vulnerability arises from incorrect validation of the second-factor authentication response, enabling an attacker who already knows a user’s password to bypass 2FA by submitting a malformed request. T...

GHSA-Q683-8468-R6H6 WebauthnAuthenticator leaks sensitive HTTP headers through INFO-level logs

Impact Webauthn\Bundle\Security\Http\Authenticator\WebauthnAuthenticator logs the full Symfony\Component\HttpFoundation\Request object inside the log context of both onAuthenticationSuccess and onAuthenticationFailure at INFO level: php $this-logger-info'User has been authenticated successfully...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.13 Images Security Update

New images are available for Red Hat build of Keycloak 26.4.13 and Red Hat build of Keycloak 26.4.13 Operator, running on OpenShift Container Platform Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Ha...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.13 Security Update

New Red Hat build of Keycloak 26.4.13 packages are available from the Customer Portal Red Hat build of Keycloak 26.4.13 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security...

GHSA-6C99-87FR-6Q7R OpenAM: Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage

Summary Description A deserialization of untrusted data vulnerability CWE-502 exists in OpenAM's WebAuthn authentication module. Under certain conditions, this may allow an attacker to achieve arbitrary code execution in the context of the application server. This affects OpenAM Community Edition...

PT-2026-52178

Name of the Vulnerable Software and Affected Versions OpenAM Community Edition versions prior to 16.1.1 Description A deserialization of untrusted data issue exists in the WebAuthn authentication module. This occurs when the application fails to properly validate data before deserializing it, whi...

Authentication Bypass

Yubico java-webauthn-server is vulnerable to Authentication Bypass. The vulnerability is due to incorrect validation of a function's return value during the second-factor authentication flow, allowing attackers to bypass the intended authentication checks and impersonate legitimate users...

keycloak: org.keycloak/keycloak-services: Keycloak: Policy bypass during WebAuthn credential registration via client-side JavaScript manipulation

A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction fails to validate that the newly created credential's parameters, such as public key...

CVE-2026-46419

Yubico webauthn-server-core aka java-webauthn-server 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.12 Security Update

New Red Hat build of Keycloak 26.4.12 packages are available from the Customer Portal Red Hat build of Keycloak 26.4.12 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security...

Astra Linux – Vulnerability in Firefox and Thunderbird

If a compromised content process sends an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out-of-bounds write would occur, leading to memory corruption and potentially exploitable crashes. This vulnerability affects Thunderbird 91.8, Firefox 99, and Firefo...

GHSA-W4P5-RFH6-CWRV Keycloak: Unauthorized account takeover via WebAuthn token replay

A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay ExecuteActionsActionToken tokens within Keycloak's WebAuthn Web Authentication flow. By intercepting an execute-actions email link, an attacker can register their own authenticator to a victim's...

CVE-2026-37982 Keycloak: org.keycloak.authentication: keycloak: unauthorized account takeover via webauthn token replay

A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay ExecuteActionsActionToken tokens within Keycloak's WebAuthn Web Authentication flow. By intercepting an execute-actions email link, an attacker can register their own authenticator to a victim's...

Keycloak: Policy bypass during WebAuthn credential registration via client-side JavaScript manipulation

A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction fails to validate that the newly created credential's parameters, such as public key...