OS Command Injection Vulnerability in Magicblack MacCMS10 Template Handler
CVE-2026-90788

5.1MEDIUM

Key Information:

Vendor

Magicblack

Status
Maccms10
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90788?

A security flaw has been identified in Magicblack's MacCMS10 version 2026.1000.4055, specifically within the Template Handler component. The vulnerability resides in an obscure functionality linked to the file /admin1.php/admin/template/index/path/.%40template%40default%40html%40label.html. This flaw allows an attacker to perform OS command injection, potentially enabling remote exploitation. Publicly available exploit code may facilitate these attacks. As of the latest reports, the vendor has been notified of the issue but has yet to provide a response.

Affected Version(s)

MacCMS10 2026.1000.4055

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90788 - Proof of Concept

References

https://vuldb.com/vuln/403294
vdb-entry
https://vuldb.com/vuln/403294/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90788
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

seikruun (VulDB User)
VulDB CNA Team
.