What’s Vulnerable › Vulnerabilities

CVE-2023-3592

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-02 · updated 2026-06-17
• Weakness: CWE-401

Description

In Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that contains invalid property types.

Affected products

• The Eclipse Foundation Eclipse Mosquitto: before 2.0.16 — fixed in 2.0.16

How to fix

Upgrade to a fixed version: The Eclipse Foundation Eclipse Mosquitto 2.0.16. Check the vendor advisory for mitigations.

References

• https://mosquitto.org/blog/2023/08/version-2-0-16-released/
• https://security.gentoo.org/glsa/202401-09
• https://mosquitto.org/blog/2023/08/version-2-0-16-released/
• https://security.gentoo.org/glsa/202401-09

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