# CVE-2026-32135

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## 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.

## Key facts

- **CVE ID:** CVE-2026-32135
- **Published:** 2026-04-20
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-122

## Affected products

- `emqx:nanomq`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-32135

## Citation

> AI Analytics. CVE-2026-32135. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-32135. Derived from NIST NVD. Licensed CC0.

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