WordPress OptinMonster plugin <= 2.6.4 - Unprotected REST-API to Sensitive Information Disclosure and Unauthorized API access vulnerability

optinmonster

Software
OptinMonster
Vulnerable Versions
<= 2.6.4
Fixed in version
2.6.5
Classification
Multiple Vulnerabilities
OWASP Top 10
A3: Sensitive Data Exposure
Disclosure Date
2021-10-27
CVSS 3.0 score

7.2

High

Can be exploited remotely without any authentication.

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Details

Unprotected REST-API to Sensitive Information Disclosure and Unauthorized API access vulnerability discovered by Chloe Chamberland (WordFence) in WordPress OptinMonster plugin (versions <= 2.6.4).

Solution

Update the WordPress OptinMonster plugin to the latest available version (at least 2.6.5).

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