CVEvulnerability
CVE-2021-39341
8.2 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-11-01
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- CVSS 2.0 ([email protected])
- 6.4 MEDIUM — AV:N/AC:L/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-285, CWE-319, CWE-863
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.
Affected configurations
• optinmonster optinmonster (<= 2.6.4)
Related
References
- https://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?rev=2606519#L1460 Third Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39341 Third Party Advisory
- https://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vulnerabilities/ Exploit, Third Party Advisory
- https://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?rev=2606519#L1460 Third Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39341 Third Party Advisory
- https://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vulnerabilities/ Exploit, Third Party Advisory