What’s Vulnerable › Vulnerabilities

CVE-2021-24726: WP Simple Booking Calendar <= 2.0.6 (before 07/12/2021) - Authenticated SQL Injection

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-13 · updated 2026-06-17
• Weakness: CWE-89

Description

The WP Simple Booking Calendar WordPress plugin before 2.0.6 did not escape, validate or sanitise the orderby parameter in its Search Calendars action, before using it in a SQL statement, leading to an authenticated SQL injection issue

Affected products

• Veribo, Roland Murg WP Simple Booking Calendar: before 2.0.6 — fixed in 2.0.6

How to fix

Upgrade to a fixed version: Veribo, Roland Murg WP Simple Booking Calendar 2.0.6. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/f85b6033-d7c1-45b7-b3b0-8967f7373bb8
• https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29176
• https://wpscan.com/vulnerability/f85b6033-d7c1-45b7-b3b0-8967f7373bb8
• https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29176

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