GHSA-86J7-9J95-VPQJ Better Auth has stored XSS in the auth-server origin via javascript: redirect_uri in oidc-provider and mcp

Am I affected? Check each condition. Users are affected when all of the first three hold. - Their application enables the oidc-provider plugin or the mcp plugin from better-auth/plugins. The mcp plugin wraps the same provider and carries the same defect. Both are on the migration path to...

Authentication Bypass Using an Alternate Path or Channel

Overview better-auth is a The most comprehensive authentication library for TypeScript. Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the handleOAuthUserInfo. An attacker can gain unauthorized access to user accounts by...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +188 more potentially affected by CVE-2026-53516 via @better-auth/core (>=1.3.18, <=1.6.10)

@better-auth/core NPM version =1.3.18, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.3.18, =1.5.0-beta.13 and more Source cves: CVE-2026-53516 Source advisory: SNYK:JS-BETTERAUTHCORE-17889819...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +199 more potentially affected by CVE-2026-53516 via better-auth (>=1.0.0, <=1.6.10)

better-auth NPM version =1.0.0, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.0.0-canary.2, =1.5.0-beta.13 and more Source cves: CVE-2026-53516 Source advisory: OSV:GHSA-G38M-R43W-P2Q7...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +199 more potentially affected by CVE-2026-53516 via better-auth (>=1.0.0, <=1.6.10)

better-auth NPM version =1.0.0, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.0.0-canary.2, =1.5.0-beta.13 and more Source cves: CVE-2026-53516 Source advisory: SNYK:JS-BETTERAUTH-17889818...

NPM: Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email

NPM: Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email vulnerability discovered by ? in WordPress Npm better-auth versions 1.6.11...

Authentication Bypass Using an Alternate Path or Channel

Overview @better-auth/core is a The most comprehensive authentication framework for TypeScript. Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the handleOAuthUserInfo. An attacker can gain unauthorized access to user accounts by...

GHSA-G38M-R43W-P2Q7 Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth at a version 1.6.11 on the stable line, or any current next pre-release. - emailAndPassword.enabled: true is set in their application's betterAuth ... configuration. - At least one OAuth or SS...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +199 more potentially affected by CVE-2026-53514 via better-auth (>=1.0.0, <=1.6.10)

better-auth NPM version =1.0.0, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.0.0-canary.2, =1.5.0-beta.13 and more Source cves: CVE-2026-53514 Source advisory: SNYK:JS-BETTERAUTH-17889813...

Better Auth vulnerable to unauthorized invitation acceptance via unverified email match in organization plugin

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth with the organization plugin import organization from "better-auth/plugins/organization". - Their application enables a sign-up surface that allows arbitrary unverified email registration. Mos...

GHSA-FMH4-WCC4-5JM3 Better Auth vulnerable to unauthorized invitation acceptance via unverified email match in organization plugin

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth with the organization plugin import organization from "better-auth/plugins/organization". - Their application enables a sign-up surface that allows arbitrary unverified email registration. Mos...

Missing Authorization

Overview better-auth is a The most comprehensive authentication library for TypeScript. Affected versions of this package are vulnerable to Missing Authorization in the acceptInvitation function of the organization plugin when the system relies solely on an unverified email-string equality check ...

NPM: Better Auth vulnerable to unauthorized invitation acceptance via unverified email match in organization plugin

NPM: Better Auth vulnerable to unauthorized invitation acceptance via unverified email match in organization plugin vulnerability discovered by ? in WordPress Npm better-auth versions 1.6.11...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +199 more potentially affected by CVE-2026-53514 via better-auth (>=1.0.0, <=1.6.10)

better-auth NPM version =1.0.0, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.0.0-canary.2, =1.5.0-beta.13 and more Source cves: CVE-2026-53514 Source advisory: OSV:GHSA-FMH4-WCC4-5JM3...

@anchrd/gate (>=0.28.0, <=0.32.0), @anchrd/gate-api (>=0.1.1, <=0.26.0) +21 more potentially affected by unknown CVE via @better-auth/oauth-provider (>=1.5.5, <=1.6.25)

@better-auth/oauth-provider NPM version =1.5.5, =0.28.0, =0.1.1, =0.0.0-dev-20260121145510, =0.0.0-chat-to-edit-20251119071712, =0.0.0-dev-20260410224321, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712...

@anchrd/gate (>=0.28.0, <=0.32.0), @anchrd/gate-api (>=0.1.1, <=0.26.0) +21 more potentially affected by CVE-2026-67332 via @better-auth/oauth-provider (>=1.5.5, <=1.6.25)

@better-auth/oauth-provider NPM version =1.5.5, =0.28.0, =0.1.1, =0.0.0-dev-20260121145510, =0.0.0-chat-to-edit-20251119071712, =0.0.0-dev-20260410224321, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +199 more potentially affected by CVE-2026-53512 via better-auth (>=1.0.0, <=1.6.10)

better-auth NPM version =1.0.0, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.0.0-canary.2, =1.5.0-beta.13 and more Source cves: CVE-2026-53512 Source advisory: SNYK:JS-BETTERAUTH-17889816...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +199 more potentially affected by CVE-2026-53512 via better-auth (>=1.0.0, <=1.6.10)

better-auth NPM version =1.0.0, =0.26.5, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.0.7, =1.0.0-canary.2, =1.5.0-beta.13 and more Source cves: CVE-2026-53512 Source advisory: OSV:GHSA-PW9M-5JXM-XR6H...

GHSA-PW9M-5JXM-XR6H Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth and has enabled at least one of: oidcProvider imported from better-auth/plugins/oidc-provider, or mcp imported from better-auth/plugins/mcp. - Their application has at least one confidential...

Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth and has enabled at least one of: oidcProvider imported from better-auth/plugins/oidc-provider, or mcp imported from better-auth/plugins/mcp. - Their application has at least one confidential...