The Happy Addons plugin for WordPress can be easily attacked by hackers through the Image Stack Group feature. This is because the plugin does not properly clean up user input and protect against malicious code. As a result, hackers with certain levels of access can add their own scripts to web pages, which will then run whenever someone views those pages.
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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