OptinMonster <= 2.6.4 - Unprotected REST-API Endpoints

Improper Authorization
CVE CVE-2021-39341
CVSS High (8.2)
Publicly Published November 1, 2021
Last Updated January 22, 2024
Researcher Chloe Chamberland
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.

References

1 affected software package

Software Type Plugin
Software Slug optinmonster (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.6.4
Patched Version
  • 2.6.5
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