Description
WordPress Plugin Simple Mail Address Encoder is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Simple Mail Address Encoder version 1.6.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.7 or latest
References
https://github.com/CBiu/wp-plugins-vuln/blob/master/XSS/simple-mail-address-encoder.md
https://plugins.svn.wordpress.org/simple-mail-address-encoder/trunk/readme.txt
Related Vulnerabilities
WordPress 4.2.x Same Origin Method Execution (SOME) Vulnerability (4.2 - 4.2.7)
IBM RTC CVE-2018-1694 Vulnerability (CVE-2018-1694)
TYPO3 Observable Differences in Behavior to Error Inputs Vulnerability (CVE-2020-11063)
WebLogic CVE-2018-2893 Vulnerability (CVE-2018-2893)
Plone CMS Cryptographic Issues Vulnerability (CVE-2012-6661)