CVE-2025-12526 MEDIUM

CVE-2025-12526: Private Google Calendars <= 20250811 - Missing Authorization to Authenticated (Subscriber+) Settings Reset

Vendor Michielve
Product Private Google Calendars
Weakness CWE-862 · Missing authorization
Published November 11, 2025
Last update April 8, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

The Private Google Calendars plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'pgc_remove' action in all versions up to, and including, 20250811. This makes it possible for authenticated attackers, with Subscriber-level access and above, to reset the plugin's settings.

Explanation of Vulnerability in Simple Terms

02Summary

Private Google Calendars contains an authorization flaw that allows authenticated users to modify calendar data they should not have access to. An attacker with a low-privilege account can alter calendar entries or settings belonging to other users. The vulnerability affects all versions up to August 11, 2025. A patched version has not yet been publicly identified.

What an attacker can do

03Attacker Capabilities

Modify or alter calendar data belonging to other users without proper authorization.

Potential impact on your site

04Site Impact

Users' calendar data can be modified by other authenticated users, compromising data integrity and user trust.

Conditions required to exploit

05Prerequisites

Attacker must have a valid low-privilege account on the site or service.

Key dates

06Disclosure timeline

November 11, 2025 CVE published
April 8, 2026 Record updated