CVE Watch1 ago 2026

CVE-2026-67333

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 redirect_uris registered

CVSS

7.2

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 1 ago 2026 · Última mod.: 1 ago 2026 · CWE-79

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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 redirect_uris 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: redirect_uri, which the authorization server later returns unchanged in the consent response. If the deployment's consent page navigates the browser to the returned redirectURI (e.g. assigning it to window.location.href), the attacker's JavaScript executes in the authorization-server origin, exposing the victim's session and enabling account takeover.

Referencias oficiales

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