Improper Authorization Vulnerability in EMQ EMQX Enterprise Session Handling
CVE-2026-6564

5.3MEDIUM

Key Information:

Vendor

EMQ

Status
EMQx Enterprise
Vendor
CVE Published:
19 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6564?

EMQX Enterprise versions up to 6.1.0 contain a vulnerability in the session handling component that allows for improper authorization. This flaw enables remote attackers to manipulate access controls and potentially launch unauthorized actions within the system. Despite attempts to notify the vendor, no response was received regarding the disclosure, making this exploit publicly available and posing significant risks to users of the affected product.

Affected Version(s)

EMQX Enterprise 6.0

EMQX Enterprise 6.1.0

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-2026-6564 - Proof of Concept

References

https://vuldb.com/vuln/358201
vdb-entry
https://vuldb.com/vuln/358201/cti
signaturepermissions-required
https://vuldb.com/submit/789924
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
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

CCCaaa (VulDB User)
VulDB CNA Team
.