CVE-2026-81766mediumCWE-269

CVE-2026-81766: fallo de gravedad media en Really Simple Security

Really Simple Security < 9.8.0 - Multisite Subsite Admin+ Arbitrary Plugin Installation via rsp_upgrade_install_plugin

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear Really Simple Security

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

33Vexday Risk Score

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

ssvc Attendcvss 6.6epss 0.4%
The Really Simple Security WordPress plugin before 9.8.0 does not check that the user is allowed to install Really Simple Security WordPress plugin before 9.8.0 before installing one from a user-supplied URL, allowing an administrator of a subsite on a multisite network to install and execute arbitrary code in the network-shared Really Simple Security WordPress plugin before 9.8.0 directory, which WordPress otherwise reserves to the network administrator. Exploitation requires the network administrator to have enabled the Really Simple Security WordPress plugin before 9.8.0 administration menu for subsites, which is not the default.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Unknown · Really Simple Security
⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
CVEs relacionadas — Really Simple Security

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-88798MEDIUMReally Simple Security (Free) < 9.8.3 - Unauthenticated Unbounded Option Growth via Spoofed Client IP HeaderEPSS 0.4%CVE-2026-89080HIGHReally Simple Security < 9.8.1 - Unauthenticated 2FA Bypass via Email Provider State DemotionEPSS 0.3%CVE-2026-8293HIGHReally Simple Security < 9.5.10.1 - Authentication Bypass via Two-Factor OTP SkipEPSS 0.2%