CVE-2026-126495

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Source
https://cve.org/CVERecord?id=CVE-2026-126495
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126495.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-126495
Published
2026-11-11T00:58:48Z
Modified
2026-11-15T02:30:30Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
MQTTX through 1.13.3 Stored XSS via Topic Tree and JSON Tree Tooltips
Details

MQTTX desktop through 1.13.3 contains a stored cross-site scripting vulnerability that allows attackers to inject script by publishing malicious MQTT topic names or payloads rendered unescaped in tooltips. Attackers controlling a broker or publishing to subscribed topics can execute script in the Electron renderer, which has nodeIntegration enabled, when victims hover Topic Tree or JSON tree nodes.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126495.json"
}
References

Affected packages

Git / github.com/emqx/mqttx

Affected ranges

Type
GIT
Repo
https://github.com/emqx/mqttx
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
766c9327177885dc233c0e39d0735136256563e1
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "1.13.3"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "1.13.3"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

v1.*
v1.0.0
v1.1.0
v1.1.1
v1.10.0
v1.10.1
v1.11.0
v1.11.1
v1.12.0
v1.12.0-beta.1
v1.12.0-beta.2
v1.12.0-beta.3
v1.12.0-beta.4
v1.12.1
v1.12.1-beta.1
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.2.0
v1.2.2
v1.2.3
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.4.1
v1.4.2
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.6.0
v1.6.1
v1.6.2
v1.7.0
v1.7.1
v1.7.2
v1.7.3
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.9.0
v1.9.1
v1.9.1-beta.1
v1.9.1-beta.2
v1.9.10
v1.9.2
v1.9.3
v1.9.4
v1.9.5
v1.9.6
v1.9.7
v1.9.8
v1.9.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126495.json"