---
id: CVE-2026-39764
title: >-
  Unauthenticated SQL Injection in Radius Booking — Booking Calendar for
  Appointments &amp; Services <= 1.0.19 versions.
summary: >-
  Unauthenticated SQL Injection in Radius Booking — Booking Calendar for
  Appointments &amp; Services <= 1.0.19 versions.
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L'
cwe:
  - CWE-89
vendor: RadiusTheme
product: radius-booking
affected:
  - radius-booking >= n/a <= 1.0.19
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T11:17:23.547'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-39764'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/radius-booking/vulnerability/wordpress-radius-booking-booking-calendar-for-appointments-services-plugin-1-0-19-sql-injection-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-06T10:23:35.288938Z'
ingestedAt: '2026-10-06T08:50:17.484Z'
---

## Overview

Unauthenticated SQL Injection in Radius Booking — Booking Calendar for Appointments &amp; Services <= 1.0.19 versions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.