Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Optinmonster | Optinmonster | <= 2.6.4 |
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?Third Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39341Third Party Advisory
- https://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vuExploitThird Party Advisory
- https://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?Third Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39341Third Party Advisory
- https://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vuExploitThird Party Advisory
FAQ
What is CVE-2021-39341?
CVE-2021-39341 is a vulnerability with a CVSS score of 8.2 (HIGH). 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 funct...
How severe is CVE-2021-39341?
CVE-2021-39341 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-39341?
Check the references section above for vendor advisories and patch information. Affected products include: Optinmonster Optinmonster.