Team Members <= 8.7 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'custom_css' Parameter

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4.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-12114
CVSS 4.4 (Medium)
Publicly Published June 29, 2026
Last Updated June 30, 2026
Researcher Averon Averenkov (Averon Averenkov) - Averon Security

Description

The Team Members – Multi Language Supported Team Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 8.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

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

References

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Vulnerability Details for Team Members – Multi Language Supported Team Plugin

Team Members – Multi Language Supported Team Plugin

Software Type Plugin
Software Slug team-showcase-supreme (view on wordpress.org)
Patched? Yes
Remediation Update to version 8.8, or a newer patched version
Affected Version
  • <= 8.7
Patched Version
  • 8.8

Recent vulnerabilities in Team Members – Multi Language Supported Team Plugin

Team Members – Multi Language Supported Team Plugin <= 8.5 - Authenticated (Editor+) SQL Injection
4.9
CVE-2025-68060
May 7, 2026
Researcher: Jarno Vos (jarnovos)
Team Member <= 7.4 - Authenticated (Editor+) Local File Inclusion
7.2
CVE-2024-52385
Nov 11, 2024
Researcher: João Pedro Soares de Alcântara
Team Member <= 4.4 - Authenticated (Editor+) Stored Cross-Site Scripting via new_style_name
6.4
CVE-2023-23647
Mar 21, 2023
Researcher: Rio Darmawan
# Title CVE ID CVSS Researchers Date
1 Team Members – Multi Language Supported Team Plugin <= 8.5 - Authenticated (Editor+) SQL Injection CVE-2025-68060 4.9 Jarno Vos (jarnovos) May 7, 2026
2 Team Member <= 7.4 - Authenticated (Editor+) Local File Inclusion CVE-2024-52385 7.2 João Pedro Soares de Alcântara November 11, 2024
3 Team Member <= 4.4 - Authenticated (Editor+) Stored Cross-Site Scripting via new_style_name CVE-2023-23647 6.4 Rio Darmawan March 21, 2023
View more vulnerabilities in this software package View more vulnerabilities

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