CVE-2026-121874 · Package
NO FIX YET · SEE WHAT TO DO
The Post Duplicator WordPress plugin before 3.0.18 saves settings without limiting them to its own options. A site administrator on a WordPress multisite network who is not a Super Admin can overwrite any option on their site, including role definitions, and grant themselves network-management capabilities.
first public Nov 9, 2026 · 1 source
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Only WordPress multisite networks running Post Duplicator before 3.0.18 are exposed, and only through site administrators who are not Super Admins. Single-site WordPress installs are not described as affected. Sites that do not run the plugin can skip this.
Not affected if plugin-not-installed, single-site-wordpress, version-3.0.18-or-later
Who cares multisite, post-duplicator, wordpress
3.0.18 or later (the version the description says the flaw was fixed in).The Post Duplicator WordPress plugin before 3.0.18 does not restrict settings saves to its own options, allowing a site administrator on a multisite network who is not a Super Admin to overwrite arbitrary options of their site, including the role definitions, and so grant themselves network-management capabilities.
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