Smash Balloon Social Post Feed <= 2.19.1 - Unauthenticated Stored Cross-Site Scripting

6.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-24508
CVSS 6.1 (Medium)
Publicly Published August 16, 2021
Last Updated January 22, 2024
Researcher dc11

Description

The Smash Balloon Social Post Feed WordPress plugin before 2.19.2 does not sanitise or escape the feedID POST parameter in its feed_locator AJAX action (available to both authenticated and unauthenticated users) before outputting a truncated version of it in the admin dashboard, leading to an unauthenticated Stored Cross-Site Scripting issue which will be executed in the context of a logged in administrator.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for Smash Balloon Social Post Feed – Simple Social Feeds for WordPress

Software Type Plugin
Software Slug custom-facebook-feed (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.19.2, or a newer patched version
Affected Version
  • < 2.19.2
Patched Version
  • 2.19.2

Recent vulnerabilities in Smash Balloon Social Post Feed – Simple Social Feeds for WordPress

# Title CVE ID CVSS Researchers Date
1 Smash Balloon Social Post Feed <= 4.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute CVE-2026-16775 6.4 Wordfence PRISM August 15, 2026
2 Smash Balloon Social Post Feed <= 4.3.2 - Missing Authorization CVE-2025-49937 4.3 Legion Hunter October 9, 2025
3 Smash Balloon Custom Facebook Feed <= 4.3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via `data-color` Attribute CVE-2025-4577 6.4 Asaf Mozes June 9, 2025
4 Smash Balloon Social Post Feed <= 4.2.1 - Cross-Site Request Forgery CVE-2024-31379 4.3 Majed Refaea April 10, 2024
5 Smash Balloon Social Post Feed <= 4.1.5 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2022-4477 6.4 István Márton December 20, 2022
6 Smash Balloon Social Post Feed <= 4.1 - Reflected Cross-Site Scripting CVE-2021-25065 5.4 Krzysztof Zając December 16, 2021
7 Smash Balloon Social Post Feed <= 4.0 - Arbitrary Plugin Settings Update to Stored Cross-Site Scripting CVE-2021-24918 5.4 Marc-Alexandre Montpas October 29, 2021
8 Smash Balloon Plugins (Various Versions) - Reflected Cross-Site Scripting 6.1 WPScanTeam July 20, 2021

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