WordPress plugin
Post Duplicator security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 13 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical0
- High2
- Medium10
- Low1
All Post Duplicator vulnerabilities
- Medium4.7Authenticated (Administrator+) Privilege Escalation
<3.0.18Update to 3.0.18
- Low2.7Missing Authorization
≤3.0.17Update to 3.0.18
- Medium4.3Missing Authorization
<3.0.17Update to 3.0.17
- Medium4.3Authorization Bypass to Authenticated (Contributor+) Post Duplication
≤3.0.11Update to 3.0.12
- Medium4.3Missing Authorization to Authenticated (Contributor+) Post Duplication with Arbitrary Author Attribution
≤3.0.11Update to 3.0.12
- High7.5Authenticated (Contributor+) PHP Object Injection
<3.0.15Update to 3.0.15
- High7.5Authenticated (Contributor+) PHP Object Injection
≤3.0.10Update to 3.0.11
- Medium4.3Missing Authorization to Authenticated (Contributor+) Protected Post Meta Insertion via 'customMetaData' Parameter
≤3.0.8Update to 3.0.9
- Medium4.3Missing Authorization
≤2.35Update to 2.36
- Medium4.3Authenticated (Contributor+) Protected Post Disclosure
≤2.36Update to 2.37
- Medium4.3Missing Authorization via mtphr_duplicate_post
≤2.31Update to 2.32
- Medium6.4Cross-Site Scripting
<2.24Update to 2.24
- Medium6.1Reflected Cross-Site Scripting
≤2.16Update to 2.17
Post Duplicator: common questions
Does Post Duplicator have known vulnerabilities?
Yes. VulnCrest Radar lists 13 known vulnerabilities in Post Duplicator: 2 high, 10 medium, 1 low. None are known to affect version null.
How do I check which version of Post Duplicator I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Post Duplicator vulnerability?
CVE-2026-121875, published Nov 9, 2026: Post Duplicator < 3.0.18 - Authenticated (Administrator+) Privilege Escalation. Severity: Medium (CVSS 4.7).
Is any Post Duplicator vulnerability listed in CISA KEV?
No. None of the known Post Duplicator vulnerabilities is currently listed in the CISA KEV catalog.