Out-of-bounds Read Affecting emqx/nanomq package, versions [,0.24.10-beta.2)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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- published7 Apr 2026
- disclosed2 Apr 2026
- creditgrant-yim
Introduced: 2 Apr 2026
CVE-2026-34608 (opens in a new tab)How to fix?
Upgrade emqx/nanomq to version 0.24.10-beta.2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in the hook_work_cb() function when parsing message bodies with cJSON_Parse. An attacker can cause a denial of service by sending a specially crafted JSON payload with a length that is a power-of-two greater than or equal to 1024, resulting in an out-of-bounds read of heap memory.