SEPTEMBER 18, 2026
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Case File

CVE-2026-3367

MEDIUM · CVSS 4.4 EPSS 0.26%

Source: NVD + CISA KEV + EPSS · Published 2026-07-11 · Last synced 2026-08-10

CyberRota Analysis

AI-Generated

The Lockme OAuth2 calendars integration plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the 'App ID' setting, affecting all versions up to 2.11.0. Authenticated attackers with administrator-level access can inject arbitrary scripts into the settings page, potentially compromising user security, especially in WordPress multisite environments. Administrators of affected WordPress installations should prioritize remediation to safeguard against exploitation.

CVE
CVE-2026-3367
Severity
MEDIUM
CVSS
4.4
EPSS
0.26%
WordPress Java

Original NVD Description

The Lockme OAuth2 calendars integration plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'App ID' setting in all versions up to, and including, 2.11.0. This is due to insufficient input sanitization and output escaping. The register_setting() call on line 197 lacks a sanitize callback, allowing unsanitized data to be stored via update_option(). When the settings page is rendered, the stored value is echoed directly into an HTML input's value attribute without esc_attr() on line 212. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in the settings page that will execute whenever a user accesses the plugin settings page. Multiple fields are affected: App ID (client_id), App Secret (client_secret), Bookings ID prefix (id_prefix), and API domain (api_domain). This vulnerability is particularly impactful in WordPress multisite installations where administrators of individual sites should not be able to execute JavaScript affecting other users.