Vulnerability · Published May 1, 2026 · Assigned by VulDB

CVE-2026-7578MacCMS Pro Plugin Installation add.html install unrestricted upload

Medium 4.7

In plain English

A medium-severity unrestricted file upload in MacCMS Pro. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.2%top 86.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
n/a	MacCMS Pro	2022.1.02022.1.12022.1.22022.1.3

Weakness: CWE-434, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-360419 | MacCMS Pro Plugin Installation add.html install unrestricted upload vdb-entry, technical-description
VDB-360419 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #792283 | MacCMS MacCMS Pro 2022.1.3 Upload any file third-party-advisory
https://github.com/qingyun985/Cyber-Security/issues/1 exploit, issue-tracking