Name: CVE-2021-39341: Improper Authorization
Creator: Rapid7
Published: 2021-11-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-39341, CWE-285, CWE-319, CWE-863, CVSS 8.2, EPSS 0.21929

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 Details

CVSS 3.1 Base Score: 8.2
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Optinmonster Plugin	—	Update optinmonster plugin to version 2.6.5, or a newer patched version	May 15, 2025	Nov 1, 2021

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CVSS Details

Covered by Rapid7

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