CVE-2021-24726

Name: CVE-2021-24726
Creator: NVD / NIST
Published: 2021-09-13T18:15:18.563+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.52%

Last modified Jun 17, 2026

CVE-2021-24726 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.52%

71.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Wpsimplebookingcalendar	Wp Simple Booking Calendar	< 2.0.6

References

https://wpscan.com/vulnerability/f85b6033-d7c1-45b7-b3b0-8967f7373bb8Exploit, Third Party Advisory
https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29176Exploit, Third Party Advisory
https://wpscan.com/vulnerability/f85b6033-d7c1-45b7-b3b0-8967f7373bb8Exploit, Third Party Advisory
https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29176Exploit, Third Party Advisory

Timeline

Published: Sep 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24726?

How severe is CVE-2021-24726?

CVE-2021-24726 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24726?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24726?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST