Post Duplicator: A security weakness
Post Duplicator is affected by a security weakness. Exploitation requires at least contributor-level access. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is < 3.0.15.
- Component
- Post Duplicator
- Plugin slug
post-duplicator- Affected
- < 3.0.15
- Safe version
3.0.15- Published
- Jun 24, 2026
- Weakness
- Not assigned
This CVE was published Jun 24, 2026 and is one of 8 known issues for this plugin.
Update, patch or deactivate.
Update Post Duplicator to 3.0.15 or later, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H