{
"id": "GHSA-ch57-39q2-4crm",
"aliases": [
"CVE-2026-43980"
],
"details": "Node names (long_name, short_name) received via MQTT are stored in SQLite without sanitization and rendered into the DOM without escaping.\nAny participant on a public Meshtastic MQTT broker can set a malicious node name that executes JavaScript in the browser of every Malla dashboard visitor.\n\nAffected files:\n\n - src/malla/templates/traceroute_graph.html (line ~832)\n - src/malla/templates/map.html (lines ~945, 1078)\n - src/malla/templates/packet_detail.html (lines ~1402, 1452)\n - src/malla/static/js/relay_node_analysis.js (line ~124)\n\nSteps to reproduce\n\n 1. Publish a Meshtastic NODEINFO_APP packet to any public MQTT broker with long_name set to a HTML entity i.e `<img src=x onerror=alert(1)>`\n 2. Wait for malla-capture to store it\n 3. Open the dashboard\n\nImpact\n\nAllows unauthenticated remote attackers to execute arbitrary JavaScript in the browser, such as: \n\n - Phishing overlays\n - Force redirect to malicious websites\n - Injection of arbitrary third-party scripts (no CSP restrictions)\n - Browser resource abuse \n - Persistent dashboard denial of service",
"summary": "malla: Stored XSS via Meshtastic node names in multiple frontend pages",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.1.7"
}
]
}
],
"package": {
"name": "malla",
"ecosystem": "PyPI"
}
}
],
"modified": "2026-06-03T21:06:27Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L"
}
],
"published": "2026-06-03T21:06:27Z",
"references": [
{
"url": "https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm",
"type": "WEB"
},
{
"url": "https://github.com/zenitraM/malla/commit/4086e2b5f61615a813b70b25bc76095083552135",
"type": "WEB"
},
{
"url": "https://github.com/zenitraM/malla",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-06-03T21:06:27Z"
}
}