CVE-2026-82843criticalCWE-287

CVE-2026-82843: fallo crítico en WP OAuth Server ( Login with WordPress )

WP OAuth Server < 6.4.0 - Subscriber+ Cross-User Account Takeover via OIDC ID Token Substitution

Publicada el

Seguir esta CVE+ Monitorear WP OAuth Server

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

48Vexday Risk Score

Sin señal de explotación. Ella tiene prueba de concepto pública.

ssvc Attendcvss 9epss 0.2%
The WP OAuth Server ( Login with WordPress ) WordPress plugin before 6.4.0 does not bind the OpenID Connect identity assertion it issues to the authorization grant being exchanged, returning instead the assertion belonging to whichever user authenticated most recently, which allows users with the Subscriber role and above to obtain a validly signed identity assertion for another user, including an administrator, and authenticate as them at any application that uses the site for single sign-on.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Productos afectados
Unknown · WP OAuth Server ( Login with WordPress )
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