CVE-2026-32135
High
Description
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Versions prior to 0.24.11 have a remotely triggerable heap buffer overflow in the `uri_param_parse` function of NanoMQ's REST API. The vulnerability occurs due to an off-by-one error when allocating memory for query parameter keys and values, allowing an attacker to write a null byte beyond the allocated buffer. This can be triggered via a crafted HTTP request. Version 0.24.11 patches the issue.
SeverityHigh
CVSS7.5
Exploit probability—
ProductEmqx Nanomq
PublishedApr 20, 2026
First seenApr 20, 2026
Weakness typeCWE-122CWE-122
How to fix
Update
- emqx nanomq0.24.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| emqx nanomq | v < 0.24.11 | 0.24.11 |
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