Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
The Post Duplicator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.0.11. This is due to the `duplicate_post_permissions()` permission callback only verifying the `duplicate_posts` capability without checking whether the requesting user holds `publish_posts` or other status-gated capabilities. This makes it possible for authenticated attackers, with Contributor-level access and above, to create duplicate posts with `future` (scheduled, auto-publishes) or `private` status, bypassing editorial review. Additionally, the REST endpoint does not enforce administrator-configured post-type duplication restrictions, allowing duplication of post types that have been explicitly disabled.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| metaphorcreations | Post Duplicator | up to 3.0.11 | — | No fix listed | CNA |
- Post Duplicator Vendormetaphorcreations Affected up to 3.0.11 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4245
- 2026-10-03 Alias added: GHSA-53vg-j9w4-c9v9
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/bb671c8f-9e14-4f79-adfa-72f48ec02449?source=cve
- https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L520
- https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L635
- https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L740
- https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L624
- https://plugins.trac.wordpress.org/changeset/3485579/
More metaphorcreations vulnerabilities
- TI-2025-07398 Ditty < 3.1.58 - Unauthenticated SSRF CVSS 3.1HIGH 8.6
- TI-2024-06224 Ditty 3.1.39-3.1.45 - Author+ Stored XSS CVSS 3.1MEDIUM 6.1
- TI-2023-03837 Ditty < 3.1.25 - Reflected XSS CVSS 3.1MEDIUM 6.1
- TI-2024-06219 Ditty < 3.1.45 - Author+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2024-12399 Ditty – Responsive News Tickers, Sliders, and Lists < 3.1.52 - Author+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2024-08907 Ditty < 3.1.47 - Author+ Stored XSS CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-4245 · CVE Program
- CVE-2026-4245 · NVD
- FIRST EPSS
- GHSA-53vg-j9w4-c9v9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences