CVE-2021-39341
8.2 HIGHThe OptinMonster WordPress plugin is vulnerable to sensitive information disclosure and unauthorized setting updates due to insufficient ...
Published: 2021-11-01 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 8.2 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- CWE
- CWE-285, CWE-319, CWE-863
Affected products
| Vendor | Product |
|---|---|
| optinmonster | optinmonster |
Description
The OptinMonster WordPress plugin is vulnerable to sensitive information disclosure and unauthorized setting updates due to insufficient authorization validation via the logged_in_or_has_api_key function in the ~/OMAPI/RestApi.php file that can used to exploit inject malicious web scripts on sites with the plugin installed. This affects versions up to, and including, 2.6.4.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-39341
- [Other]https://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?rev=2606519#L1460
- [Other]https://wordfence.com/vulnerability-advisories/#CVE-2021-39341
- [Exploit reference]https://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vulnerabilities/
- [Other]https://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?rev=2606519#L1460
- [Other]https://wordfence.com/vulnerability-advisories/#CVE-2021-39341
- [Exploit reference]https://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vulnerabilities/
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