CVE-2026-121875
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
The Post Duplicator WordPress plugin before version 3.0.18 does not validate the capabilities assigned to roles through its permissions settings, allowing a site administrator on a multisite network who is not a Super Admin to grant any role arbitrary capabilities, including the network-management capabilities reserved to the Super Admin.
Risk Assessment
This can lead to privilege escalation and breach of isolation between sites in a multisite network, potentially allowing unauthorized changes across the network.
Recommendation
Update the Post Duplicator plugin to version 3.0.18 or later to ensure proper validation of capabilities assigned to roles.
Other vulnerabilities in Post Duplicator WordPress plugin
See all- CVE-2026-121874High
The Post Duplicator WordPress plugin before version 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.
- CVE-2026-111740Low
The Post Duplicator WordPress plugin before 3.0.17 does not check whether the requesting user may view each post before returning a list of posts for a post type. This allows users with a role as low as Contributor to read the titles and hierarchy of other users' draft and private posts.
- CVE-2026-10749High
The Post Duplicator WordPress plugin before version 3.0.15 does not safely handle custom meta-data during post duplication, allowing attacker-supplied serialized values to be stored without the WordPress meta API's double-serialization protection.
Original NVD description (English source)
The Post Duplicator WordPress plugin before 3.0.18 does not validate the capabilities assigned to roles through its permissions settings, allowing a site administrator on a multisite network who is not a Super Admin to grant any role arbitrary capabilities, including the network-management capabilities reserved to the Super Admin.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS