CVE-2026-7578: MacCMS Pro Plugin Installation add.html install unrestricted upload
A weakness has been identified in MacCMS Pro up to 2022.1.3. This vulnerability affects the function install of the file /admi.php/admin/addon/add.html of the component Plugin Installation Handler. Executing a manipulation can lead to unrestricted upload. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Restrict external/remote access to MacCMS Pro Plugin Installation Handler (the affected file/function: /admi.php/admin/addon/add.html, function install) using network controls (e.g., firewall/ACL) so only trusted hosts/users can reach the plugin installation endpoint.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-7578?
CVE-2026-7578 is considered a critical vulnerability due to its unrestricted file upload capability.
How do I fix CVE-2026-7578?
To fix CVE-2026-7578, upgrade MacCMS Pro to version 2022.1.4 or later.
What components are affected by CVE-2026-7578?
CVE-2026-7578 affects the Plugin Installation Handler in the add.html file within MacCMS Pro.
Can CVE-2026-7578 lead to remote code execution?
Yes, CVE-2026-7578 can potentially allow an attacker to execute arbitrary code on the server.
What versions of MacCMS Pro are vulnerable to CVE-2026-7578?
Versions of MacCMS Pro up to 2022.1.3 are vulnerable to CVE-2026-7578.