Missing authorization in Yoast Duplicate Post
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.
Summary
The Yoast Duplicate Post plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the clone_bulk_action_handler() and republish_request() functions in all versions up to, and including, 4.5. This makes it possible for authenticated attackers, with Contributor-level access and above, to duplicate any post on the site including private, draft, and trashed posts they shouldn't have access to. Additionally, attackers with Author-level access and above can use the Rewrite & Republish feature to overwrite any published post with their own content.
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 |
|---|---|---|---|---|---|
| Yoast | Yoast Duplicate Post | up to 4.5 | — | No fix listed | CNA |
| — | yoast/duplicate-post (Packagist) | before 4.6 | 4.6 | Patch available | GHSA-g9w4-m5fx-x3wv |
- Yoast Duplicate Post VendorYoast Affected up to 4.5 Fixed in — No fix listed CNA
- yoast/duplicate-post (Packagist) Vendor— Affected before 4.6 Fixed in 4.6 Patch available GHSA-g9w4-m5fx-x3wv
Remediation
- Fix · GHSA-g9w4-m5fx-x3wv yoast/duplicate-post (Packagist) Fixed in 4.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1217
- 2026-10-03 Alias added: GHSA-g9w4-m5fx-x3wv
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-948c-5bd8b3caaa39?source=cve
- https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/handlers/bulk-handler.php#L115
- https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/post-republisher.php#L128
- https://github.com/Yoast-dist/duplicate-post
More Yoast vulnerabilities
- TI-2017-14158 Google Analytics Dashboard Plugin cross site scriting CVSS 3.1MEDIUM 6.1
- TI-2019-15368 Duplicate-Post 3.2.3 - Persistent Cross-Site Scripting CVSS 4.0MEDIUM 4.8
- TI-2019-10120 The Yoast SEO plugin before 11.6-RC5 for WordPress does not properly restrict unfiltered HTML in term descriptions. CVSS 3.1CRITICAL 9.8
- TI-2023-13290 WordPress Yoast SEO: Local Plugin <= 14.8 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
- TI-2015-02025 Multiple SQL injection vulnerabilities in admin/class-bulk-editor-list-table.php in the… CVSS 2.0MEDIUM 6.5
- TI-2018-13725 A Race condition vulnerability in unzip_file in admin/import/class-import-settings.php in… CVSS 3.0MEDIUM 6.6
Sources
- CVE-2026-1217 · CVE Program
- CVE-2026-1217 · NVD
- FIRST EPSS
- GHSA-g9w4-m5fx-x3wv · 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