CVE-2026-53517

CVE-2026-53517 affects Better Auth’s oauth-provider (and related memory adapter) prior to version 1.6.11. The POST /oauth2/token refresh_token flow performs a non-atomic read–validate–revoke–mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh toke...

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...

NPM: @better-auth/oauth-provider's OAuth authorization-code grant allows concurrent redemption when two token requests race the find-then-delete primitive

NPM: @better-auth/oauth-provider's OAuth authorization-code grant allows concurrent redemption when two token requests race the find-then-delete primitive vulnerability discovered by ? in WordPress Npm better-auth versions 1.6.11...

GHSA-7W99-5WM4-3G79 @better-auth/oauth-provider's OAuth authorization-code grant allows concurrent redemption when two token requests race the find-then-delete primitive

Am I affected? Users are affected if all of the following are true: - Their project depends on @better-auth/oauth-provider at a version = 1.6.0, = 1.4.8-beta.7, 1.6.0, or enables the legacy oidc-provider or mcp plugins from better-auth/plugins. - Their application exposes /api/auth/oauth2/token o...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview @better-auth/oauth-provider is an An oauth provider plugin for Better Auth Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition through a race condition in the authorizationcode grant handler. An attacker can obtain multiple valid access,...

Incorrect Authorization

Overview @better-auth/oauth-provider is an An oauth provider plugin for Better Auth Affected versions of this package are vulnerable to Incorrect Authorization due to the OAuth token and refresh flows in packages/oauth-provider/src/token.ts, packages/oauth-provider/src/authorize.ts, and...

CVE-2026-12746

The Dancer2::Plugin::Auth::OAuth::Provider Perl plugin (versions before 0.23 ) lacks support for the OAuth 2.0 state parameter . Specifically, the authentication_url method fails to issue a state value, and the callback method registers tokens without verifying that the callback matches the sessi...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-9795 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

de.adorsys.keycloak:user-secret-adapter-embedded (1.0.7), de.adorsys.keycloak:user-secret-auth-provider (1.0.7) +12 more potentially affected by CVE-2026-9088 via org.keycloak:keycloak-services (7.0.0)

org.keycloak:keycloak-services MAVEN version 7.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:user-secret-adapter-embedded 1.0.7 -...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-9794 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-9798 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-9704 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

Malicious Package

Overview internal-auth-provider is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and this packag...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-4325 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-3121 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

CVE-2026-33042

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.29 and 8.6.49, a user can sign up without providing credentials by sending an empty authData object, bypassing the username and password requirement. This allows the creati...

CVE-2026-33409 Parse Server: Auth provider validation bypass on login via partial authData

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.52 and 9.6.0-alpha.41, an authentication bypass vulnerability allows an attacker to log in as any user who has linked a third-party authentication provider, without knowin...

CVE-2026-33409 Parse Server: Auth provider validation bypass on login via partial authData

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.52 and 9.6.0-alpha.41, an authentication bypass vulnerability allows an attacker to log in as any user who has linked a third-party authentication provider, without knowin...

de.adorsys.keycloak:keycloak-clientregistration-provider (>=1.2, <=3.0), de.adorsys.keycloak:keycloak-provider-extension (>=1.2, <=3.0) +8 more potentially affected by CVE-2026-3911 via org.keycloak:keycloak-services (3.4.3.final)

org.keycloak:keycloak-services MAVEN version 3.4.3.final is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - de.adorsys.keycloak:keycloak-clientregistration-provider =1.2, =1.2, =0.0.1, =0.0.1, =0.0.1,...

PT-2026-25757

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.11.x through 10.11.10 Description Mattermost does not properly validate a user's authentication method when processing an account authentication type switch. This allows an authenticated attacker to change an account...