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Vulnerability record · CVE-2022-1463 · published 10 May 2022

CVE-2022-1463: Booking calendar project booking calendar deserialization of untrusted data vulnerability

Booking Calendar Project · Booking Calendar

The Booking Calendar plugin for WordPress is vulnerable to PHP Object Injection via the [bookingflextimeline] shortcode in versions up to, and including, 9.1. This could be exploited by subscriber-level users and above to call arbitrary PHP objects on a vulnerable site.

8.8 CVSS 3.1 High EPSS 1.7% · top 23.9% CWE-502 · Deserialization of untrusted data
8.8CVSS 3.1 base score, v2 6.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The Booking Calendar plugin for WordPress is vulnerable to PHP Object Injection via the [bookingflextimeline] shortcode in versions up to, and including, 9.1. This could be exploited by subscriber-level users and above to call arbitrary PHP objects on a vulnerable site.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.wordfence.com/blog/2022/04/php-object-injection-in-booking-calendar-plugin/ ExploitThird Party Advisory
https://www.wordfence.com/blog/2022/04/php-object-injection-in-booking-calendar-plugin/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2018-20556Booking calendar project booking calendar sql injection vulnerabilitySQL injection vulnerability in Booking Calendar plugin 8.4.3 for WordPress allows remote attackers to execute arbitrary SQL commands via the booking_…EPSS 19%8.8CVE-2018-5673Booking calendar project booking calendar cross-site request forgery vulnerabilityAn issue was discovered in the booking-calendar plugin 2.1.7 for WordPress. CSRF exists via wp-admin/admin.php.EPSS 0.77%6.1CVE-2023-36384Booking calendar project booking calendar cross-site scripting vulnerabilityUnauth. Reflected Cross-Site Scripting (XSS) vulnerability in CodePeople Booking Calendar Contact Form plugin <= 1.2.40 versions.EPSS 0.41%6.1CVE-2021-25040Booking calendar project booking calendar cross-site scripting vulnerabilityThe Booking Calendar WordPress plugin before 8.9.2 does not sanitise and escape the booking_type parameter before outputting it back in an admin page…EPSS 0.80%6.1CVE-2017-2151Booking calendar project booking calendar cross-site scripting vulnerabilityCross-site scripting vulnerability in Booking Calendar version 7.1 and earlier allows remote attackers to inject arbitrary web script or HTML via uns…EPSS 0.85%5.3CVE-2017-2150Booking calendar project booking calendar path traversal vulnerabilityDirectory traversal vulnerability in Booking Calendar version 7.0 and earlier allows remote attackers to read arbitrary files via specially crafted c…EPSS 2.4%4.8CVE-2018-5671Booking calendar project booking calendar cross-site scripting vulnerabilityAn issue was discovered in the booking-calendar plugin 2.1.7 for WordPress. XSS exists via the wp-admin/admin.php extra_field1[items][field_item1][pr…EPSS 0.62%4.8CVE-2018-5672Booking calendar project booking calendar cross-site scripting vulnerabilityAn issue was discovered in the booking-calendar plugin 2.1.7 for WordPress. XSS exists via the wp-admin/admin.php form_field5[label] parameter.EPSS 0.62%

Source: NIST National Vulnerability Database (record CVE-2022-1463), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.