CVE-2026-4299: Mainwp Child Reports

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

The MainWP Child Reports plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 2.2.6. This is due to a missing capability check in the heartbeat_received() function in the Live_Update class. This makes it possible for authenticated attackers, with Subscriber-level access and above, to obtain MainWP Child Reports activity log entries (including action summaries, user information, IP addresses, and contextual data) via the WordPress Heartbeat API by sending a crafted heartbeat request with the 'wp-mainwp-stream-heartbeat' data key.

Affected products

• Mainwp Mainwp Child Reports: up to and including 2.2.6

Published 2026-04-08. Last modified 2026-07-24.