NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In version 0.24.6, by generating a combined traffic pattern of high-frequency publishes and rapid reconnect/kick-out using the same ClientID and massive subscribe/unsubscribe jitter, it is possible to reliably trigger heap memory corruption in the Broker process, causing it to exit immediately with SIGABRT due to free(): invalid pointer. As of time of publication, no known patched versions are available.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22040.json",
"cwe_ids": [
"CWE-416"
],
"cna_assigner": "GitHub_M"
}{
"source": [
"AFFECTED_FIELD",
"CPE_RANGE"
],
"cpe": "cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "= 0.24.6"
},
{
"last_affected": "= 0.24.6"
},
{
"introduced": "0"
},
{
"fixed": "0.24.6"
}
]
}