CVE-2021-43408 json
Duplicate Post WordPress Plugin SQL Injection Vulnerability
published 2021-11-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30343
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 9.7%
- EPSS 9.7% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
The "Duplicate Post" WordPress plugin up to and including version 1.1.9 is vulnerable to SQL Injection. SQL injection vulnerabilities occur when client supplied data is included within an SQL Query insecurely. SQL Injection can typically be exploited to read, modify and delete SQL table data. In many cases it also possible to exploit features of SQL server to execute system commands and/or access the local file system. This particular vulnerability can be exploited by any authenticated user who has been granted access to use the Duplicate Post plugin. By default, this is limited to Administrators, however the plugin presents the option to permit access to the Editor, Author, Contributor and Subscriber roles.
Patch / fix
- Copy Delete Posts Duplicate Post WordPress Plugin 1.2.0
Exploit prediction
9.66% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- appcheck-ng.com https://appcheck-ng.com/security-advisory-duplicate-post-wordpress-plugin-sql-injection-vulnerability/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Affected products
- Copy Delete Posts Duplicate Post WordPress Plugin
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
- Technology feeds
References
-
appcheck-ng.com
/security-advisory-duplicate-post-wordpress-plugin-sql-injection-vulnerability/
exploit, third-party-advisory
-
plugins.trac.wordpress.org
/browser/copy-delete-posts/tags/1.2.0/post/handler.php#L510
third-party-advisory
Sources
- CVE List CVE-2021-43408
- NVD CVE-2021-43408
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