CVE-2026-96039 BA Book Everything <= 1.8.27 - Unauthenticated Stored Cross-Site Scripting via first_name Parameter
Unauthenticated attackers can inject arbitrary scripts via the first_name parameter in the BA Book Everything plugin, potentially leading to session hijacking or malicious actions.
- 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-2026-96039?
CVE-2026-96039 is a high-severity cross-site scripting vulnerability in bookingalgorithms BA Book Everything, published on 25 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The BA Book Everything plugin for WordPress is vulnerable to Stored Cross-Site Scripting via first_name Parameter in all versions up to, and including, 1.8.27 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. An unauthenticated attacker can obtain the valid order_id, order_num, and order_hash credentials required to reach the vulnerable action_to_pay() handler simply by placing a guest booking through the public [babe-booking-form] shortcode, making the full exploit chain reachable without any account.
Weakness: CWE-79
Which versions are affected by CVE-2026-96039?
How do I fix CVE-2026-96039?
No fix has been published for CVE-2026-96039 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-2026-96039 being exploited?
There is no known exploitation of CVE-2026-96039 in the wild and no public exploit code.
Sources
Also known as GHSA-r85w-gp72-g77q.