What is CVE-2026-119516?

CVE-2026-119516 is a critical-severity vulnerability in Mamunur Rashid Radius Booking — Calendar For Appointments &Amp; Services, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-11-06.

How severe is CVE-2026-119516?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Mamunur Rashid Radius Booking — Calendar For Appointments &Amp; Services

CVE-2026-119516

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.

Vulnerability class: Insecure Deserialization

Published 2026-11-06 · last modified 2026-11-07.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Mamunur Rashid Radius Booking — Calendar For Appointments &Amp; Services

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

patchstack.com/database/wordpress/plugin/radius-booking/vulnerability/wordpress… (vdb-entry)

Frequently asked questions

What is CVE-2026-119516?: CVE-2026-119516 is a critical-severity vulnerability in Mamunur Rashid Radius Booking — Calendar For Appointments &Amp; Services, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-11-06.
How severe is CVE-2026-119516?: Critical severity. CVSS v3 base score is 9.8 out of 10.