CVE-2026-28083 WordPress Flatsome theme <= 3.20.5 - Cross Site Scripting (XSS) vulnerability
Attackers can inject malicious scripts into the Flatsome WordPress theme, potentially stealing user data or hijacking accounts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28083?
CVE-2026-28083 is a medium-severity cross-site scripting vulnerability in UX-themes Flatsome, published on 26 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in UX-themes Flatsome flatsome allows Stored XSS.This issue affects Flatsome: from n/a through <= 3.20.5.
Weakness: CWE-79
Which versions are affected by CVE-2026-28083?
How do I fix CVE-2026-28083?
No fix has been published for CVE-2026-28083 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-28083 being exploited?
There is no known exploitation of CVE-2026-28083 in the wild and no public exploit code.
Sources
Also known as GHSA-wc4c-6r77-mp37.