Vulnerability · Published Nov 6, 2026 · Assigned by Patchstack
CVE-2026-119516WordPress Radius Booking — Booking Calendar for Appointments & Services plugin <= 1.0.20 - PHP Object Injection vulnerability
Critical 9.8
In plain English
A critical-severity unsafe deserialization in Radius Booking — Booking Calendar for Appointments & Services from Mamunur Rashid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.4%top 67.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Deserialization of Untrusted Data vulnerability in Mamunur Rashid Radius Booking — Booking Calendar for Appointments & Services radius-booking allows Object Injection.This issue affects Radius Booking — Booking Calendar for Appointments & Services: from n/a through 1.0.20.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mamunur Rashid | Radius Booking — Booking Calendar for Appointments & Services | 0 – through 1.0.20 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H