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Status published
Medium
CVE-2021-36872
WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability
Vulnerability Description
Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type].
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Original researcher - Vlad Visse (Patchstack Red Team)
References
More from Hector Cabrera
View All →CVE-2023-45607
WordPress WordPress Popular Posts Plugin <= 6.3.2 is vulnerable to Cross Site Scripting (XSS)
Medium
6.5
CVE-2022-43468
External initialization of trusted variables or data stores vulnerability exists...
Unknown
0
CVE-2021-20746
Cross-site scripting vulnerability in WordPress Popular Posts 5.3.2 and earlier...
Medium
5.4
Affected Vendor
Hector Cabrera
View all reports →Affected Software
WordPress Popular Posts
Vulnerable Versions:
5.3.3
Timeline
Official Publish:
September 23rd, 2021
Last Modified:
April 28th, 2026
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N