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2 vulnerabilities found for IoT Cloud MQTT Broker EMQX by Meari
CVE-2026-33356 (GCVE-0-2026-33356)
Vulnerability from nvd – Published: 2026-05-11 16:02 – Updated: 2026-05-11 18:18
VLAI
EPSS
VEX
Title
Meari MQTT broker missing per-device subscribe ACL
Summary
In Meari IoT Cloud MQTT Broker deployments running EMQX 4.x, any authenticated low-privilege account can subscribe to global wildcard topics and receive telemetry from devices the user does not own. The broker enforces publish restrictions but does not enforce equivalent subscribe authorization at per-device scope.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/xn0tsa/nobody-puts-baby-in-a-corner | technical-description |
| https://www.runzero.com/advisories/meari-mqtt-bro… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Meari | IoT Cloud MQTT Broker EMQX |
Affected:
4.x
(custom)
|
Date Public
2026-05-11 16:00
Credits
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CVE-2026-33356 (GCVE-0-2026-33356)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:02 – Updated: 2026-05-11 18:18
VLAI
EPSS
VEX
Title
Meari MQTT broker missing per-device subscribe ACL
Summary
In Meari IoT Cloud MQTT Broker deployments running EMQX 4.x, any authenticated low-privilege account can subscribe to global wildcard topics and receive telemetry from devices the user does not own. The broker enforces publish restrictions but does not enforce equivalent subscribe authorization at per-device scope.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/xn0tsa/nobody-puts-baby-in-a-corner | technical-description |
| https://www.runzero.com/advisories/meari-mqtt-bro… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Meari | IoT Cloud MQTT Broker EMQX |
Affected:
4.x
(custom)
|
Date Public
2026-05-11 16:00
Credits
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