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CVE-2021-36872

MEDIUM 5.4 CVSS 3.1
Published
September 23, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
audit@patchstack.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

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

Affected WordPress components

  • WP Popular Posts Plugin · wordpress-popular-posts
    Confirmed match Active
    From 5.3.3 (including) to 5.3.3 (including)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Hector Cabrera WordPress Popular Posts — From 5.3.3 (including) to 5.3.3 (including)
  • wordpress_popular_posts_project wordpress_popular_posts — Up to and including 5.3.3

References

  • github.com https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md Release Notes, Third Party Advisory
  • patchstack.com https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability Third Party Advisory
  • nvd.nist.gov Official NVD record