Use After Free Affecting emqx/nanomq package, versions [,0.24.11)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-EMQXNANOMQ-15440483
- published8 Mar 2026
- disclosed5 Mar 2026
- creditUnknown
Introduced: 5 Mar 2026
CVE-2026-22040 (opens in a new tab)How to fix?
Upgrade emqx/nanomq to version 0.24.11 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the broker process when handling a combined pattern of high-frequency publishes, rapid reconnects or kick-outs using the same ClientID, and significant subscribe/unsubscribe jitter. An attacker can cause heap memory corruption and force the broker to crash by manipulating client connections and message traffic in this manner.