What is CVE-2026-4299?

CVE-2026-4299 is a medium-severity vulnerability in Mainwp Child Reports, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-04-08.

How severe is CVE-2026-4299?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Mainwp Child Reports

CVE-2026-4299

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.

Vulnerability class: Broken Access Control

EPSS: 0.005 (42.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mainwp Child Reports — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-4299?: CVE-2026-4299 is a medium-severity vulnerability in Mainwp Child Reports, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-04-08.
How severe is CVE-2026-4299?: Medium severity. CVSS v3 base score is 5.3 out of 10.