CVE-2022-1463: booking_calendar_project booking_calendar Deserialization of Untrusted Data
Vulnerability summary
CVE-2022-1463 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in booking_calendar_project booking_calendar. EPSS estimates a 1.72% chance of exploitation in the next 30 days, higher than 77.2% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 10-05-2022PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
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 metrics
4 scores · 3 sources · 2 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- wordfenceSource8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HDiffers
EPSS trend
Probability
1.72%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
+0.03 pp
From 1.69% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wordfence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Booking_calendar_project1 product
- booking_calendar≤ 9.1
Wordpress1 product
- booking≤ 9.1 (fixed in 9.1.1)
Wpdevelop1 product
3 vendors · 3 products
References
2 links- www.wordfence.com/blog/2022/04/php-object-injection-in-booking-calendar-plugin/X Refsource MISCExploitThird Party Advisory