CVE-2026-8686
High · 7.5CVSS
7.5
EPSS
0.7%
Published
May 15, 2026
CISA due date
—
The record
Missing bounds validation in the MQTT v5.0 property parser in coreMQTT before 5.0.1 allows an MQTT broker to cause a denial of service by sending a crafted packet. To remediate this issue, users should upgrade to v5.0.1.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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