Smash Balloon Social Post Feed <= 4.0 - Arbitrary Plugin Settings Update to Stored Cross-Site Scripting

5.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-24918
CVSS 5.4 (Medium)
Publicly Published October 29, 2021
Last Updated January 23, 2023
Researcher Marc-Alexandre Montpas

Description

The Smash Balloon Social Post Feed WordPress plugin before 4.0.1 did not have any privilege or nonce validation before saving the plugin's setting. As a result, any logged-in user on a vulnerable site could update the settings and store rogue JavaScript on each of its posts and pages.

Wordfence blocked 27 attacks targeting this vulnerability in the past 24 hours.

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 4.0.1, or a newer patched version
Affected Version
  • < 4.0.1
Patched Version
  • 4.0.1

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 <= 2.19.1 - Unauthenticated Stored Cross-Site Scripting CVE-2021-24508 6.1 dc11 August 16, 2021
8 Smash Balloon Plugins (Various Versions) - Reflected Cross-Site Scripting 6.1 WPScanTeam July 20, 2021

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