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# CVE-2021-36873
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# CVE-2021-36873
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## Description
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## Description
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Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: `&blockcountry_blockmessage`.
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Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: &blockcountry_blockmessage.
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## CVSS (Vector and Score)
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## CVSS (Vector and Score)
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CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N - 5.5 MEDIUM
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CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N - 5.5 MEDIUM
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@ -17,14 +17,9 @@ WordPress iQ Block Country plugin
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## Steps to Reproduce
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## Steps to Reproduce
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1. Login as administrator
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1. Login as administrator
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2. Go to http://localhost/wp-admin/options-general.php?page=iq-block-country%2Flibs%2Fblockcountry-settings.php
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2.
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3. Find `Message to display when people are blocked:` form
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4. Input `</textarea><script>alert(1)</script>`
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5. Scroll down and press `Save Changes` button
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## Proof of Concept
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## Proof of Concept
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- Video
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> https://youtu.be/WtOiHY5R-t0
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- Image
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- Image
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![image](https://user-images.githubusercontent.com/36522826/202700374-52d36350-adff-4fe3-b46d-21f08955e8c6.png)
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- Video
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