CVE-2021-36872

MEDIUM

WordPress Popular Posts <= 5.3.3 - Authenticated Stored Cross-Site Scripting via Widget Post Type Parameter

Title source: llm

Description

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

References (2)

Core 2

Core References

Release Notes, Third Party Advisory x_refsource_confirm

https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md

View Writeup ZIP pw:eip

Third Party Advisory x_refsource_misc

https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability

Scores

CVSS v3 5.5

EPSS 0.0057

EPSS Percentile 42.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (2)

Hector Cabrera/WordPress Popular Posts 5.3.3

wordpress_popular_posts_project/wordpress_popular_posts < 5.3.3

Published Sep 23, 2021

Tracked Since Feb 18, 2026