@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +146 more potentially affected by CVE-2026-53518 via better-auth (>=1.0.0-canary.2, <=1.6.10)

better-auth NPM version =1.0.0-canary.2, =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, =1.2.5, =1.9.7 and more Source cves: CVE-2026-53518 Source advisory: OSV:GHSA-7W99-5WM4-3G79...

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...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +146 more potentially affected by CVE-2026-53518 via better-auth (>=1.0.0-canary.2, <=1.6.10)

better-auth NPM version =1.0.0-canary.2, =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, =1.2.5, =1.9.7 and more Source cves: CVE-2026-53518 Source advisory: SNYK:JS-BETTERAUTH-17889820...

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,...

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

Overview better-auth is a The most comprehensive authentication library for TypeScript. 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...

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...

@better-auth/sso provider registration has server-side request forgery via unvalidated OIDC endpoints

Am I affected? Users are affected if all of the following are true: - Their application uses @better-auth/sso at a version = 0.1.0, 1.6.11 on the stable line, or any 1.7.0-beta.x on the pre-release line. - The sso plugin is added to their application's betterAuth plugins: ... array. - Any user wi...

@agentcorporation/server (>=0.3.3, <=0.3.13), @agentuity/auth (>=1.0.35, <=3.0.0-alpha.6) +120 more potentially affected by CVE-2026-53517 via better-auth (>=1.4.9, <=1.6.0-beta.0)

better-auth NPM version =1.4.9, =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, =0.0.7, =1.4.21, =1.7.0, =2026.512.0-canary.0, =2.1.0, =2.1.1 and more Source cves: CVE-2026-53517 Source advisory: GHSA-392P-2Q2V-4372...

GHSA-392P-2Q2V-4372 Better Auth: OAuth refresh-token rotation forks the token family on concurrent redemption

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. - At least one OAuth client served by their application's authorization server requests the offlineaccess scope, so refresh token...

@inkeep/agents-api (>=0.73.0, <=0.80.7), @inkeep/agents-cli (>=0.73.0, <=0.80.7) +5 more potentially affected by CVE-2026-53517 via @better-auth/oauth-provider (1.6.9)

@better-auth/oauth-provider NPM version 1.6.9 is affected by a known vulnerability. The following packages have a transitive dependency on @better-auth/oauth-provider and may be impacted: - @inkeep/agents-api =0.73.0, =0.73.0, =0.73.1, =0.73.0, =0.73.1, =0.73.1, =0.73.1, =0.80.7 Source cves:...

@inkeep/agents-api (>=0.73.0, <=0.80.7), @inkeep/agents-cli (>=0.73.0, <=0.80.7) +5 more potentially affected by CVE-2026-53517 via @better-auth/oauth-provider (1.6.9)

@better-auth/oauth-provider NPM version 1.6.9 is affected by a known vulnerability. The following packages have a transitive dependency on @better-auth/oauth-provider and may be impacted: - @inkeep/agents-api =0.73.0, =0.73.0, =0.73.1, =0.73.0, =0.73.1, =0.73.1, =0.73.1, =0.80.7 Source cves:...

@agent-native/core (>=0.26.5, <=0.47.1), @automate.ax/components-core (>=0.1.3, <=0.3.1) +29 more potentially affected by CVE-2026-53517 via @better-auth/memory-adapter (>=1.6.0, <=1.6.10)

@better-auth/memory-adapter NPM version =1.6.0, =0.26.5, =0.1.3, =2.2.0, =2.2.0, =2.2.0, =2.2.0, =2.2.0, =2.2.0, =2.2.0, =2.2.0, =2.11.3, =1.6.0-depup.0, =0.73.0, =0.73.0, =0.79.1 and more Source cves: CVE-2026-53517 Source advisory: SNYK:JS-BETTERAUTHMEMORYADAPTER-17889814...

Insufficient Session Expiration

Overview @better-auth/oauth-provider is an An oauth provider plugin for Better Auth Affected versions of this package are vulnerable to Insufficient Session Expiration through the POST /oauth2/token endpoint during the refresh token granting. An attacker can gain unauthorized access by exploiting...

@agentcorporation/server (>=0.3.3, <=0.3.13), @agentuity/auth (>=1.0.35, <=3.0.0-alpha.6) +120 more potentially affected by CVE-2026-53517 via better-auth (>=1.4.9, <=1.6.0-beta.0)

better-auth NPM version =1.4.9, =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, =0.0.7, =1.4.21, =1.7.0, =2026.512.0-canary.0, =2.1.0, =2.1.1 and more Source cves: CVE-2026-53517 Source advisory: OSV:GHSA-392P-2Q2V-4372...

NPM: Better Auth: OAuth refresh-token rotation forks the token family on concurrent redemption

NPM: Better Auth: OAuth refresh-token rotation forks the token family on concurrent redemption vulnerability discovered by ? in WordPress Npm better-auth versions = 1.4.8-beta.7, 1.6.0...

@inkeep/agents-api (>=0.73.0, <=0.80.7), @inkeep/agents-cli (>=0.73.0, <=0.80.7) +5 more potentially affected by CVE-2026-53517 via @better-auth/oauth-provider (1.6.9)

@better-auth/oauth-provider NPM version 1.6.9 is affected by a known vulnerability. The following packages have a transitive dependency on @better-auth/oauth-provider and may be impacted: - @inkeep/agents-api =0.73.0, =0.73.0, =0.73.1, =0.73.0, =0.73.1, =0.73.1, =0.73.1, =0.80.7 Source cves:...

NPM: Better Auth has insecure cryptographic defaults in oidcProvider: alg=none advertised and plain PKCE accepted by default

NPM: Better Auth has insecure cryptographic defaults in oidcProvider: alg=none advertised and plain PKCE accepted by default vulnerability discovered by ? in WordPress Npm better-auth versions 1.6.11...

GHSA-9H47-PQCX-HJR4 Better Auth has insecure cryptographic defaults in oidcProvider: alg=none advertised and plain PKCE accepted by default

Am I affected? Users are affected if all of the following are true: - Their application uses better-auth at a version below the patched release. - Their application enables oidcProvider from better-auth/plugins/oidc-provider or mcp from better-auth/plugins/mcp the mcp plugin delegates to...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +146 more potentially affected by CVE-2026-67336 via better-auth (>=1.0.0-canary.2, <=1.6.10)

better-auth NPM version =1.0.0-canary.2, =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, =1.2.5, =1.9.7 and more Source cves: CVE-2026-67336 Source advisory: OSV:GHSA-9H47-PQCX-HJR4...

Insecure Default Initialization of Resource

Overview better-auth is a The most comprehensive authentication library for TypeScript. Affected versions of this package are vulnerable to Insecure Default Initialization of Resource in the oidcProvider. An attacker can gain unauthorized access or impersonate users by exploiting insecure...