The Email Newsletter plugin for WordPress is not secure in versions up to and including 20.15. This means that someone who is not authorized to access the website can take information from the database without permission. This happens because the plugin does not properly protect the user-provided information and does not prepare the existing SQL query properly.
This information is sourced from www.wpvulnerability.com. An open-source database of vulnerabilities maintained by the community. Help us out by submitting vulnerabilities!
Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:
> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21
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