CVE-2021-24555

HIGH 8.8CVE-2021-24555 · Published 23/08/2021 · updated 17/06/2026

In short

CVE-2021-24555 is a HIGH (CVSS 8.8) vulnerability affecting diary-availability-calendar (roosty).
Chance of exploitation in the next 30 days (EPSS): 0.82%, higher than 57.5% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
diary-availability-calendar roosty	`≤ 1.0.3`	No fix yet

Description

The daac_delete_booking_callback function, hooked to the daac_delete_booking AJAX action, takes the id POST parameter which is passed into the SQL statement without proper sanitisation, validation or escaping, leading to a SQL Injection issue. Furthermore, the ajax action is lacking any CSRF and capability check, making it available to any authenticated user.

References

codevigilant.com/disclosure/2021/wp-plugin-diary-availability-calendar · Exploit
wpscan.com/vulnerability/8eafd84b-6214-450b-869b-0afe7cca4c5f · Exploit

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