CVE-2021-36872 MEDIUM

CVE-2021-36872: WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability

Vendor Hector Cabrera
Product WordPress Popular Posts
Weakness CWE-79 · XSS
Published September 23, 2021
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type].

Key dates

02Disclosure timeline

September 23, 2021 CVE published
April 28, 2026 Record updated