VULNERABILITY INTELLIGENCE
CVE-2021-39341
CVSS score8.2 HIGH
EPSS probability21.93%
CISA KEVNot currently listed
Published2021-11-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
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.
Weakness classification
- security@wordfence.com: CWE-285
- nvd@nist.gov: CWE-863
Primary references
- security@wordfence.com — Third Party Advisory
- security@wordfence.com — Third Party Advisory
- security@wordfence.com — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory