CVE-2026-92358

Keycloak 's first broker login flow contains a flaw where a temporary proof created during a cross-browser account-linking request is not properly cleared after the link is established or manually removed. An attacker who controls the external identity can exploit this residual proof to silently ...

CVE-2026-92358

A flaw was found in the first broker login flow of Keycloak. When a user confirms an account-linking request from a different browser, a temporary proof is created to validate the link. However, this proof is not properly cleared after the link is established or when the user later manually remov...

Astra Linux – Vulnerability in Firefox, Thunderbird

An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking, violating the WebAuthn goals. This vulnerability affect...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Fork: Defer linking of vma until vma is fully initialized. Thorvald reported a WARNING 1. The root cause of the issue lies in a race condition: - CPU 1: fork; - fork: Calls hugetlbfsfallocate. - dupmmap: Calls hugetlbfspunchhole....

EUVD-2026-42966

ZITADEL: Auto-linking by email: IdP-side email verification is not checked...

ZITADEL: Auto-linking by email: IdP-side email verification is not checked

Summary A flaw in the external identity provider handler allows unauthorized account linking to occur under specific administrative configurations. When auto-linking by email is enabled, ZITADEL checks that the local user's email is verified, but does not explicitly cross-check whether the incomi...

GHSA-992Q-9GWP-7R79 ZITADEL: Auto-linking by email: IdP-side email verification is not checked

Summary A flaw in the external identity provider handler allows unauthorized account linking to occur under specific administrative configurations. When auto-linking by email is enabled, ZITADEL checks that the local user's email is verified, but does not explicitly cross-check whether the incomi...

CVE-2026-86242 Unauthenticated RCE via Custom Plugin HTTP Path on Dynamically Linked Builds

Bifrost HTTP transport before 2.0.0 accepts an enabled custom plugin whose path is an HTTP URL through unauthenticated POST /api/plugins when management authentication is disabled the default, governance.authconfig.isenabled=false. The shared-object loader treats an http-prefixed path as a downlo...

CVE-2026-86242 Unauthenticated RCE via Custom Plugin HTTP Path on Dynamically Linked Builds

Bifrost HTTP transport before 2.0.0 accepts an enabled custom plugin whose path is an HTTP URL through unauthenticated POST /api/plugins when management authentication is disabled the default, governance.authconfig.isenabled=false. The shared-object loader treats an http-prefixed path as a downlo...

CVE-2026-82968

A flaw was found in the first-broker-login flow of the Keycloak identity management service. When a user links a social identity provider account to their local account, the verification proof generated is not strictly bound to the specific upstream identity being verified. This allows an attacke...

EUVD-2026-69800

A flaw was found in the first-broker-login flow of the Keycloak identity management service. When a user links a social identity provider account to their local account, the verification proof generated is not strictly bound to the specific upstream identity being verified. This allows an attacke...

CVE-2026-82968

Keycloak identity management service has a flaw in the first-broker-login flow that enables account takeover via social identity provider linking. The verification proof (described in the CVE list as a cross-session email verification proof ) is not strictly bound to the specific upstream identit...

CVE-2026-61641 Wallos: OIDC account takeover via email-based account linking without `email_verified` check

Wallos is an open-source, self-hostable personal subscription tracker. From version 4.0.0 to before version 4.9.6, Wallos's OIDC login links an incoming OIDC identity to an existing local account by matching the email claim alone, without verifying that the IdP marked that email as verified...

CVE-2026-61641 Wallos: OIDC account takeover via email-based account linking without `email_verified` check

Wallos is an open-source, self-hostable personal subscription tracker. From version 4.0.0 to before version 4.9.6, Wallos's OIDC login links an incoming OIDC identity to an existing local account by matching the email claim alone, without verifying that the IdP marked that email as verified...

GHSA-FM3F-CH8H-QW8Q @hono/oauth-providers: OAuth state check fails open on omitted state, enabling login CSRF and forced account linking

Summary The built-in social login providers accept an OAuth callback even when the state value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This defeats the state-based CSRF protection under default usage. Details The state...

@hono/oauth-providers: OAuth state check fails open on omitted state, enabling login CSRF and forced account linking

Summary The built-in social login providers accept an OAuth callback even when the state value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This defeats the state-based CSRF protection under default usage. Details The state...

CVE-2026-81888 @hono/oauth-providers: OAuth state check fails open on omitted state, enabling login CSRF and forced account linking

@hono/oauth-providers is Authentication middleware for Hono. Prior to version 0.8.6, the built-in social login providers accept an OAuth callback even when the state value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This...

EUVD-2026-68770

@hono/oauth-providers is Authentication middleware for Hono. Prior to version 0.8.6, the built-in social login providers accept an OAuth callback even when the state value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This...

CVE-2026-81888

@hono/oauth-providers , authentication middleware for the Hono web framework, has a flaw in its OAuth state validation. Prior to version 0.8.6 , the built-in social login providers accept an OAuth callback even when the state value is absent on both the expected and received sides, causing the an...

EUVD-2026-66214

@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...