WordPress CMB2 plugin < 2.13.0 - Subscriber+ Arbitrary Option Corruption vulnerability

Subscriber+ Arbitrary Option Corruption vulnerability discovered by Mutantgun in WordPress Plugin CMB2 versions 2.13.0...

CVE-2026-80338

The CMB2 WordPress plugin before version 2.13.0 is vulnerable to a flaw where it fails to perform capability checks on one of its AJAX actions . This allows users with a role as low as Subscriber to create arbitrary WordPress options and corrupt existing ones, potentially breaking core site setti...

CVE-2026-80338 CMB2 < 2.13.0 - Subscriber+ Arbitrary Option Corruption via oEmbed Handler

The CMB2 WordPress plugin before 2.13.0 does not perform any capability check on one of its AJAX actions, allowing users with a role as low as Subscriber to create arbitrary WordPress options and corrupt existing ones, which can break core site settings and take the site offline. Exploitation...