CVE-2026-67336: Use of a Broken or Risky Cryptographic Algorithm

better-auth versions before 1.6.11 contain insecure cryptographic defaults in the oidcProvider and mcp plugins that advertise the none algorithm and accept plain PKCE by default. Attackers can exploit algorithm negotiation to accept unsigned tokens or intercept authorization codes when PKCE plain...

CVE-2026-67333: Improper Neutralization of Input During Web Page Generation

better-auth before 1.6.13 and pre-release builds 1.7.0-beta.0 through 1.7.0-beta.3 fail to validate the scheme of redirecturis registered via the deprecated oidc-provider plugin and the mcp plugin which wraps the same provider. An attacker can register an OAuth client with a javascript:...

CVE-2026-67334: Incomplete Cleanup

better-auth versions before 1.6.11 fail to delete cached sessions when removing users via admin, anonymous, or SCIM endpoints when secondaryStorage is configured and storeSessionInDatabase is false. Attackers can reuse deleted user session tokens to maintain authentication for up to seven days...

CVE-2026-67314: Improperly Controlled Modification of Object Prototype Attributes

axios versions =1.15.2 and 1.18.0 contain prototype-pollution read-side gadgets in Basic auth subfield handling lib/adapters/http.js and lib/helpers/resolveConfig.js. When an application is already affected by a separate prototype-pollution primitive and makes an axios request with an own auth...

CVE-2026-67335: Improper Authentication

better-auth versions before 1.6.2 fail to validate the OAuth state parameter against the stored nonce when using cookie-backed state storage without PKCE. Attackers can forge the state parameter and supply an attacker-controlled authorization code to create authenticated sessions bound to the...

CVE-2026-67330: Improper Input Validation

@better-auth/scim a better-auth plugin versions = 1.4.0-beta.27 through = 1.7.0-beta.0 through = 1.7.0-beta.9 contain an authorization bypass. SCIM token issuance did not reject provider IDs already used by existing SSO, SAML, OIDC, generic OAuth, or social account providers, and the same logical...

CVE-2026-67319: Improperly Controlled Modification of Object Prototype Attributes

axios before 0.33.0 and 1.x before 1.18.0 can consume inherited properties from nested request option objects when the JavaScript process's Object.prototype has already been polluted by another component. While the top-level merged config uses a null prototype, nested plain objects such as auth a...

CVE-2026-67328: Improper Neutralization of Input During Web Page Generation

@better-auth/sso versions before 1.6.21 contain multiple authentication bypass vulnerabilities in SSO provider handling that allow attackers to sign in as arbitrary users. Attackers can exploit domain verification parsing mismatches, orphaned provider accounts, unbound SAML assertions, or reflect...

CVE-2026-67331: Authorization Bypass Through User-Controlled Key

better-auth SCIM versions from 1.5.0 before 1.7.0-beta.4 fail to bind non-organization SCIM providers to their creator by default, allowing authenticated users to manage other users' providers. Attackers can regenerate SCIM bearer tokens, invalidate legitimate tokens, and authenticate to SCIM API...

PT-2026-76515

The SDK forwarded every NIP-42 AUTH challenge received from a relay through an unbounded command queue. Challenge handling can wait for an asynchronous signer or user interaction, so receiving challenges was substantially faster than completing the corresponding authentication work. A malicious...

CVE-2026-67337: Authentication Bypass Using an Alternate Path or Channel

better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled. Attackers with valid primary credentials can access authenticated routes without completing second-factor verification by exploiting premature session caching...

PT-2026-67310

@better-auth/scim a better-auth plugin versions = 1.4.0-beta.27 through = 1.7.0-beta.0 through = 1.7.0-beta.9 contain an authorization bypass. SCIM token issuance did not reject provider IDs already used by existing SSO, SAML, OIDC, generic OAuth, or social account providers, and the same logical...

Malicious code in gtm-mcp-auth (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 07518fbe4f5f7d6807b80e7155b10a7f419e931302e6ee6c64b3200d6b4a6db1 lib/report.js imports childprocess, fs, https, and os and posts collected host information to a hardcoded https://hooks.zapier.com endpoint. The modu...

MAL-2026-11464 Malicious code in gtm-mcp-auth (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 07518fbe4f5f7d6807b80e7155b10a7f419e931302e6ee6c64b3200d6b4a6db1 lib/report.js imports childprocess, fs, https, and os and posts collected host information to a hardcoded https://hooks.zapier.com endpoint. The modu...

CVE-2026-55824

Contao is an Open Source CMS. In versions 4.13.40 through 5.3.46 and 5.7.0-RC1 through 5.7.6, the crawler leaks auth credentials to external hosts. Contao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for...

CVE-2026-18211

A flaw was found in the secure-client-uris client policy executor within Keycloak core services. This component is responsible for enforcing security requirements on client configurations, such as requiring encrypted connections for redirect URIs. Due to an improper check that only looks at the...

EUVD-2026-51483

A flaw was found in the secure-client-uris client policy executor within Keycloak core services. This component is responsible for enforcing security requirements on client configurations, such as requiring encrypted connections for redirect URIs. Due to an improper check that only looks at the...

CVE-2026-14541

The CVE concerns Google mcp-toolbox version 1.4.0 in its Google OAuth provider component. If an authService is initialized with mcpEnabled: true but without an explicit audience or clientId, the ValidateMCPAuth pipeline for opaque tokens omits audience validation. This causes the toolbox to accep...

SUSE CVE-2026-4525

If a Vault auth mount is configured to pass through the "Authorization" header, and the "Authorization" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16...

PT-2026-66726

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the secure-client-uris client policy executor within Keycloak core services. This component enforces security requirements for client configurations, including the requireme...