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WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability

5.5
CVSS 3.1 score Medium severity
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Software
WordPress Popular Posts
Type
Plugin
Vulnerable versions
<= 5.3.3
Fixed in
5.3.4
PSID
0a8ef9d05fdc
CVE ID
CVE-2021-36872
Classification
Cross Site Scripting (XSS)
OWASP Top 10
A7: Cross-Site Scripting (XSS)
Required privilege
Requires high privilege user authentication like admin.
Credits
Vlad Visse (Patchstack Red Team)
Publicly disclosed
2021-07-04

Details

Authenticated Persistent Cross-Site Scripting (XSS) vulnerability discovered by Vlad Visse (Patchstack) in WordPress Popular Posts plugin (versions <= 5.3.3).

Solution

Update the WordPress Popular Posts plugin to the latest available version (at least 5.3.4).

References

CVE-2021-36872 Plugin changelog

Other known vulnerabilities for WordPress Popular Posts

Reflected CrossSite Scripting (XSS) vulnerability

<= 5.5.1

6.1

29.06.2022

Authenticated Code Injection vulnerability leading to Remote Code Execution (RCE)

<= 5.3.2

8.8

11.06.2021

Authenticated Stored CrossSite Scripting (XSS) vulnerability

<= 5.3.2

6.9

07.06.2021

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