CVE-2026-32134

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Source
https://cve.org/CVERecord?id=CVE-2026-32134
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32134.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-32134
Aliases
  • GHSA-q36f-83mh-pcv2
Published
2026-05-19T17:22:13.431Z
Modified
2026-08-04T11:50:48.867532921Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
NanoMQ: NULL Pointer Dereference Crash in tcptran_pipe_peer During Session Restore
Details

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In versions 0.24.10 and below, when NanoMQ handles high-concurrency reconnect traffic using a reconnect-collision payload, the broker can crash due to a NULL pointer dereference during MQTT session resumption for cleanstart=0 clients. The transport's ppeer callback (tcptranpipepeer()) iterates cpipe->subinfol while copying session metadata from the cached old pipe to the new reconnecting pipe, without checking whether the pointer is NULL. Under a reconnect race, cpipe->subinfol can be freed and set to NULL before session restore invokes this function, resulting in a remote unauthenticated Denial-of-Service (process crash) condition. This issue has been fixed in version 0.24.11.

Database specific 
{
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32134.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/nanomq/nanonng

Affected ranges

Type
GIT
Repo
https://github.com/nanomq/nanonng
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1d2186f161706d8b2488dda58e3957ce8e50aad2
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.24.11"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*
0.11.5
0.11.8
0.13
0.13.5
0.14.5
0.15.3
0.15.5
0.16.0
0.16.3
0.16.5
0.17.0
0.17.2
0.17.8
0.18.2
0.19.1
0.20.0
0.20.5
0.20.8
0.21
0.21.2
0.21.5
0.21.6
0.21.8
0.21.9
0.22.0
0.22.1
0.22.10
0.22.2
0.22.4
0.22.6
0.22.8
0.23.1
0.23.10
0.23.2
0.23.3
0.23.5
0.23.7
0.23.8
0.23.9
0.24.0
0.24.1
0.24.10
0.24.2
0.24.3
0.24.5
0.24.6
0.24.7
0.24.8
0.7.2
0.8.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32134.json"