Threat intelligence

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

CVE-2026-12114 · team-showcase-supreme

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Team Showcase Supreme at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Team Members <= 8.7 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'custom_css' Parameter
Affected software: team-showcase-supreme(Plugin)
Affected versions: ≤ 8.7
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-12114
Published: 29 June 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory ccf00ec5-b91a-47db-81e6-68f984b8f06b). Methodology and redistribution notes

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