CVE-2026-13410

CVE-2026-13410 affects Dancer::Plugin::Auth::Google for Perl up to version 0.07, where TLS verification is disabled in the library and the default user agent SSL_verify_mode is turned off. This enables a network (MITM) attacker between the Dancer app and googleapis.com to intercept the OAuth2 tok...

PT-2026-60745

Dancer::Plugin::Auth::Google versions through 0.07 for Perl have TLS verification disabled. The default user agent is initialised with SSL verify mode explicitly disabled. An attacker with network man-in-the-middle MITM capability between the Dancer application and googleapis.com can intercept th...

CVE-2026-53518 Better Auth OAuth Provider: Race Condition in Authorization Code Exchange Enables Multi-Use Code Redemption

Better Auth is an authentication and authorization library for TypeScript. From 1.6.0 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint for the authorizationcode grant redeems a single-use authorization code through a non-atomic find-then-delete sequence, allowing two...

CVE-2026-53518

Better Auth is an authentication and authorization library for TypeScript. From 1.6.0 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint for the authorizationcode grant redeems a single-use authorization code through a non-atomic find-then-delete sequence, allowing two...

EUVD-2026-44693

Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO authorization flow did not bind the OAuth state parameter accepted by /connect/authorize to the initiating browser session, allowed attacker-controlled PKCE parameters, and left SsoAuth records intact...

CVE-2026-47158 Vaultwarden: CSRF in SSO Authorization Flow

Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO authorization flow did not bind the OAuth state parameter accepted by /connect/authorize to the initiating browser session, allowed attacker-controlled PKCE parameters, and left SsoAuth records intact...

Missing Authorization

Overview github.com/zitadel/zitadel/internal/api/oidc is a package for identity infrastructure Affected versions of this package are vulnerable to Missing Authorization in the OAuth2 Token Exchange process. An attacker can gain elevated permissions by exchanging a low-privilege token for higher...

CVE-2026-56668

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's OAuth2 Token Exchange endpoint for urn:ietf:params:oauth:grant-type:token-exchange does not verify that the subject token belongs to the requesting client or that requested scopes remain within the original token's...

CVE-2026-55672

ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's OAuth2 and OIDC CodeExchange, RefreshToken, and device token flows fail to verify that the requesting client matches the client that initiated the authorization flow, allowing intercepted grants or refre...

CVE-2026-56668

Product/Component : ZITADEL identity management platform (OAuth2 Token Exchange endpoint). Vulnerability : Prior to version 4.15.3, the endpoint for grant-type: token-exchange does not verify that the subject token belongs to the requesting client, nor ensure requested scopes stay within the orig...

CVE-2026-56668 ZITADEL: Unauthorized Token Privilege Escalation in OAuth2 Token Exchange

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's OAuth2 Token Exchange endpoint for urn:ietf:params:oauth:grant-type:token-exchange does not verify that the subject token belongs to the requesting client or that requested scopes remain within the original token's...

CVE-2026-56668 ZITADEL: Unauthorized Token Privilege Escalation in OAuth2 Token Exchange

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's OAuth2 Token Exchange endpoint for urn:ietf:params:oauth:grant-type:token-exchange does not verify that the subject token belongs to the requesting client or that requested scopes remain within the original token's...

User Impersonation

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to User Impersonation via the token-exchange identity-resolution service in packages/cli/src/modules/token-exchange/services/identity-resolution.service.ts. An attacker can authenticate as another user...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-59208

CVE-2026-59208 affects n8n, an open-source workflow automation platform. Vulnerability: when an n8n instance is configured with more than one trusted token-exchange issuer, it could resolve external identities to local accounts using only the JWT sub claim and ignore the iss claim. This allows an...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass due to improper enforcement of the PKCE S256 challenge during the OAuth2 token exchange process. An attacker can obtain access tokens without providing the expected code verifier by bypassing the intended...

Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack due to improper enforcement of OAuth2 authorization code expiry and single-use requirements in the authorization code process. An attacker can gain unauthorized access by reusing valid authorization codes during the token...

CVE-2026-26232

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange...

CVE-2026-26247

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check...