Input validation vulnerability in Gallery Block (Meow Gallery) 5.1.3

The Gallery Block plugin for WordPress, also known as Meow Gallery, has a security issue that can put websites at risk. This issue, called Stored Cross-Site Scripting, allows attackers to add harmful scripts to pages that will run whenever someone visits the page. This problem affects versions up to and including 5.1.3 and is caused by not properly cleaning and protecting user input. Only users with contributor-level permissions or higher can exploit this vulnerability.

Detected in:

Gallery Block (Meow Gallery) fixed vulnerable versions: >= * <= 5.1.3

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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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