Threat intelligence

Flatsome <= 3.20.5 - Authenticated (Contributor+) Stored Cross-Site Scripting

CVE-2026-28083 · flatsome

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

Vulnerability: Flatsome <= 3.20.5 - Authenticated (Contributor+) Stored Cross-Site Scripting
Affected software: flatsome(Theme)
Affected versions: ≤ 3.20.5
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-28083
Published: 6 October 2025
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 2904e3dd-2a5f-49f2-a949-e76c4ccfc54c). Methodology and redistribution notes

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