CVE-2026-1217 json
Yoast Duplicate Post <= 4.5 - Authenticated (Contributor+) Missing Authorization to Arbitrary Post Duplication and Overwrite
published 2026-03-18 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12800 , GHSA-g9w4-m5fx-x3wv
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
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.
Patch / fix
- packagist yoast/duplicate-post 4.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | yoast/duplicate-post | <4.6 |
4.6 |
Affected products
- yoast Yoast Duplicate Post
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
-
wordfence.com
/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-948c-5bd8b3caaa39?source=cve
web
-
plugins.trac.wordpress.org
/browser/duplicate-post/tags/4.5/src/handlers/bulk-handler.php#L115
web
-
plugins.trac.wordpress.org
/browser/duplicate-post/tags/4.5/src/post-republisher.php#L128
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-1217
advisory
-
github.com
/Yoast-dist/duplicate-post
package
Sources
- CVE List CVE-2026-1217
- GitHub Advisory GHSA-g9w4-m5fx-x3wv
- NVD CVE-2026-1217
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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.