CVE-2026-4245 json
Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication
published 2026-08-22 2 mo ago modified 2026-10-12 27 d ago also EUVD-2026-64251
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- metaphorcreations Post Duplicator
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/bb671c8f-9e14-4f79-adfa-72f48ec02449?source=cve
- plugins.trac.wordpress.org /browser/post-duplicator/trunk/includes/api.php#L520
- plugins.trac.wordpress.org /browser/post-duplicator/trunk/includes/api.php#L635
- plugins.trac.wordpress.org /browser/post-duplicator/trunk/includes/api.php#L740
- plugins.trac.wordpress.org /browser/post-duplicator/trunk/includes/api.php#L624
- plugins.trac.wordpress.org /changeset/3485579/
Sources
- CVE List CVE-2026-4245
- NVD CVE-2026-4245
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.