CVE-2026-109147 WP Booking System < 2.1.0.3 - Reflected XSS via 'booking_id' Parameter
High 7.1
Published
Updated
Check this codebase for CVE-2026-109147 and fix it if it is affected.
What it is: CVE-2026-109147 is a high-severity vulnerability in Unknown WP Booking System, published on 21 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-109147 in the wild and no public exploit code.
Affected product: Unknown WP Booking System. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-109147/ (Markdown: https://insights.sbomify.com/CVE-2026-109147/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-109147?
CVE-2026-109147 is a high-severity vulnerability in Unknown WP Booking System, published on 21 Oct 2026.
Official description
The WP Booking System WordPress plugin before 2.1.0.3 does not validate and escape one of its parameters before reflecting it back in an admin page, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as administrators.
Weakness: CWE-79
Which versions are affected by CVE-2026-109147?
How do I fix CVE-2026-109147?
No fix has been published for CVE-2026-109147 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109147 being exploited?
There is no known exploitation of CVE-2026-109147 in the wild and no public exploit code.
Sources
Also known as GHSA-xwc2-fpw5-v72g.