CVE-2026-15401 Cross-site scripting in VikBooking Hotel Booking Engine & PMS
Unauthenticated attackers can inject malicious scripts via the vbfX parameter, leading to script execution in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15401?
CVE-2026-15401 is a high-severity cross-site scripting vulnerability in e4jvikwp VikBooking Hotel Booking Engine & PMS, published on 24 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vbfX' parameter in all versions up to, and including, 1.8.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vbfX custom-field value is stored via the public-facing saveorder task, which has no capability or authentication check enforced by default, enabling fully unauthenticated submission of malicious payloads.
Weakness: CWE-79
Which versions are affected by CVE-2026-15401?
How do I fix CVE-2026-15401?
No fix has been published for CVE-2026-15401 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-2026-15401 being exploited?
There is no known exploitation of CVE-2026-15401 in the wild and no public exploit code.
Sources
Also known as GHSA-76hv-3chx-v5rm.