CVE-2026-32135 | NanoMQ MQTT Broker up to 0.24.10 REST API uri_param_parse heap-based overflow (EUVD-2026-23939)

VDB-358356 · CVE-2026-32135 · EUVD-2026-23939 NANOMQ MQTT BROKER UP TO 0.24.10 REST API URI_PARAM_PARSE HEAP-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 9.53 Summaryinfo A vulnerability described as critical has been identified in NanoMQ MQTT Broker up to 0.24.10. This impacts the function uri_param_parse of the component REST API. The manipulation results in heap-based overflow. This vulnerability is identified as CVE-2026-32135. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended. Detailsinfo A vulnerability, which was classified as critical, was found in NanoMQ MQTT Broker up to 0.24.10. Affected is the function uri_param_parse of the component REST API. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on availability. CVE summarizes: 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. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-32135 since 03/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. It is declared as proof-of-concept. Upgrading to version 0.24.11 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-23939). Productinfo Vendor NanoMQ Name MQTT Broker Version 0.24.0 0.24.1 0.24.2 0.24.3 0.24.4 0.24.5 0.24.6 0.24.7 0.24.8 0.24.9 0.24.10 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Heap-based overflow CWE: CWE-122 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Proof-of-Concept Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: MQTT Broker 0.24.11 Timelineinfo 03/10/2026 CVE reserved 04/20/2026 +40 days Advisory disclosed 04/20/2026 +0 days VulDB entry created 04/20/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Confirmed CVE: CVE-2026-32135 (🔒) GCVE (CVE): GCVE-0-2026-32135 GCVE (VulDB): GCVE-100-358356 EUVD: 🔒 Entryinfo Created: 04/20/2026 21:50 Updated: 04/20/2026 23:33 Changes: 04/20/2026 21:50 (69), 04/20/2026 23:33 (1) Complete: 🔍 Cache ID: 99:E04:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸