CVE-2026-57638 WordPress Fluent Booking plugin <= 2.1.0 - Cross Site Scripting (XSS) vulnerability
A Contributor can inject malicious scripts into the Fluent Booking plugin, potentially leading to code execution or account takeover for other users.
- 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-2026-57638?
CVE-2026-57638 is a medium-severity cross-site scripting vulnerability in WPManageNinja LLC Fluent Booking, published on 26 Jun 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
Contributor Cross Site Scripting (XSS) in Fluent Booking <= 2.1.0 versions.
Weakness: CWE-79
Which versions are affected by CVE-2026-57638?
How do I fix CVE-2026-57638?
No fix has been published for CVE-2026-57638 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-2026-57638 being exploited?
There is no known exploitation of CVE-2026-57638 in the wild and no public exploit code.
Sources
Also known as GHSA-xqj2-5xg4-w8vj.