The Post Duplicator WordPress plugin before 3.0.15 does not safely handle custom meta-data during post duplication, storing attacker-supplied serialized values without the WordPress meta API's double-serialization protection, allowing users with Contributor-level access and above to inject a PHP Object.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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