Description
The Cloud SAML SSO plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'set_organization_settings' action of the csso_handle_actions() function in all versions up to, and including, 1.0.19. The handler reads client-supplied POST parameters for organization settings and passes them directly to update_option() without any check of the user’s capabilities or a CSRF nonce. This makes it possible for unauthenticated attackers to change critical configuration (including toggling signing and encryption), potentially breaking the SSO flow and causing a denial-of-service.
Problem types
Product status
* (semver)
Timeline
2025-07-03: | Vendor Notified |
2025-09-05: | Disclosed |
Credits
Kenneth Dunn
References
www.wordfence.com/...-3316-42e5-bf28-69eb38231755?source=cve
wordpress.org/plugins/cloud-sso-single-sign-on/
plugins.trac.wordpress.org/...ts/base/CSSO_ActionHandler.php
plugins.trac.wordpress.org/.../assets/base/CSSO_services.php
plugins.trac.wordpress.org/...gs/1.0.19/assets/CSSO_Init.php
plugins.trac.wordpress.org/...ags/1.0.19/saml-sso-plugin.php
plugins.trac.wordpress.org/..._ActionHandler.php?rev=3354459