Weak Authentication Flaw in MacCMS 2025.1000.4052
CVE-2026-4562

6.9MEDIUM

Key Information:

Vendor

MacCMS

Status
Maccms
Vendor
CVE Published:
22 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4562?

A security flaw has been identified in MacCMS 2025.1000.4052, specifically within the file application/api/controller/Timming.php of the Timming API Endpoint. This vulnerability leads to missing authentication, allowing attackers to execute unauthorized actions remotely. The exploit has been publicly disclosed, making it essential for users to take immediate precautions to secure their systems.

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Affected Version(s)

MacCMS 2025.1000.4052

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-2026-4562 - Proof of Concept

References

https://vuldb.com/?id.352399
vdb-entry
https://vuldb.com/?ctiid.352399
signaturepermissions-required
https://vuldb.com/?submit.775039
third-party-advisory

CVSS V4

Score:
6.9
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

HuajiHD (VulDB User)
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