Mainwp Child - Privilege Escalation (CVE-2024-10783)

Q: Am I affected by this vulnerability?

You are affected if your site runs Mainwp Child. No account is needed to exploit this, so a public site is reachable by anyone.

Q: How do I fix it?

Update Mainwp Child to the latest available version. Where the vendor has not yet published a fix, remove or disable the plugin until they do. Until you can update, Unauthorised administrator detection in Hack Halt ProSecure contains this class of attack at the request layer.

Q: What can an attacker actually do?

This is a Privilege Escalation flaw. An attacker who exploits it can raise a low-privilege account, or none at all, to administrator.

CVE-2024-10783

Vulnerability CVE-2024-10783 PLUGIN mainwp-child HIGH

The MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites plugin for WordPress is vulnerable to privilege escalation due to a missing authorization checks on the register_site function in all versions up to, and including, 5.2 when a site is left in an unconfigured state. This makes it possible for unauthenticated attackers to log in as an administrator on instances where MainWP Child is not yet connected to the MainWP Dashboard. IMPORTANT: this only affects sites who have MainWP Child installed and have not yet connected to the MainWP Dashboard, and do not have the unique security ID feature enabled. Sites already connected to the MainWP Dashboard plugin and do not have the unique security ID feature enabled, are NOT affected and not required to upgrade. Please note versions up to 5.3.3 contained a patch, though a bypass was discovered and not addressed until version 5.3.4.

CVE-2024-10783

HIGH CVSS 8.1 Published 2024-12-13 Updated 2026-06-17

AI Risk High (87/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P2 Urgent

Severity Band HIGH

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

Affected Components 1

Reference Links 7

AI Risk Engine High (87/100)

Exploitability Very High

Active Exploitation No strong signal

Published Exploit Status No public exploit references

Threat Timeline

2024-12-13 CVE published and first recorded in the threat feed.
2026-06-17 Record updated with latest vulnerability metadata.
2026-09-14 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 16 days ago

AI enriched 16 days ago (2026-09-14 17:33 UTC)

Technical Summary

Potential Impact

Severity is HIGH (CVSS 8.1). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Very High based on remote code execution potential, low-bar exploit prerequisites.

Primary risk drivers: remote code execution potential, low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 87/100 (High, Very High) with priority P2 Urgent. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Mainwp Child PLUGIN · mainwp-child Affected: <= 5.3.3 Fixed version not specified

References

What to do about this

Patch immediately Serious, and reachable without meaningful privilege.

Fix it

Update Mainwp Child to the latest available version.

Where the vendor has not published a fix yet, disable the plugin until they do.

Cannot update today? Unauthorised administrator detection in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Alert when a new administrator appears or a role is escalated. Creating a hidden admin is the most common persistence step after a WordPress compromise.

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