NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.10, in NanoMQ's webhook_inproc.c, the hook_work_cb() function processes nng messages by parsing the message body with cJSON_Parse(body). The body is obtained from nng_msg_body(msg), which is a binary buffer without a guaranteed null terminator. This leads to an out-of-bounds read (OOB read) as cJSON_Parse reads until it finds a \0, potentially accessing memory beyond the allocated buffer (e.g., nng_msg metadata or adjacent heap/stack). The issue is often masked by nng's allocation padding (extra 32 bytes of zeros for non-power-of-two sizes <1024 or non-aligned). The overflow is reliably triggered when the JSON payload length is a power-of-two >=1024 (no padding added). This issue has been patched in version 0.24.10.
References
| Link | Resource |
|---|---|
| https://github.com/nanomq/nanomq/commit/9499a4b2c47998a6aadb69238c18b9e6771b1691 | Patch |
| https://github.com/nanomq/nanomq/releases/tag/0.24.10 | Product Release Notes |
| https://github.com/nanomq/nanomq/security/advisories/GHSA-8p57-jxj9-3qq3 | Exploit Mitigation Vendor Advisory |
Configurations
History
10 Apr 2026, 15:59
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:* | |
| References | () https://github.com/nanomq/nanomq/commit/9499a4b2c47998a6aadb69238c18b9e6771b1691 - Patch | |
| References | () https://github.com/nanomq/nanomq/releases/tag/0.24.10 - Product, Release Notes | |
| References | () https://github.com/nanomq/nanomq/security/advisories/GHSA-8p57-jxj9-3qq3 - Exploit, Mitigation, Vendor Advisory | |
| First Time |
Emqx
Emqx nanomq |
02 Apr 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-02 18:16
Updated : 2026-04-10 15:59
NVD link : CVE-2026-34608
Mitre link : CVE-2026-34608
CVE.ORG link : CVE-2026-34608
JSON object : View
Products Affected
emqx
- nanomq