CVE-2026-28166 WordPress Tourmaster plugin <= 5.4.9 - Cross Site Scripting (XSS) vulnerability
Unauthenticated attackers can inject malicious scripts into the Tourmaster WordPress plugin, potentially compromising user sessions or site integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28166?
CVE-2026-28166 is a high-severity cross-site scripting vulnerability in GoodLayers Tourmaster, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Unauthenticated Cross Site Scripting (XSS) in Tourmaster <= 5.4.9 versions.
Weakness: CWE-79
Which versions are affected by CVE-2026-28166?
How do I fix CVE-2026-28166?
No fix has been published for CVE-2026-28166 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-2026-28166 being exploited?
There is no known exploitation of CVE-2026-28166 in the wild and no public exploit code.
Sources
Also known as GHSA-4x2f-q7jf-fpvv.