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CVE-2026-43980— Malla: Stored XSS via Meshtastic node names in multiple frontend pages

Quick assessment

Affected
zenitraM malla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Malla 是一个基于 MQTT 数据对 Meshtastic 网络进行 Web 分析的工具。在提交 4086e2b5f61615a813b70b25bc76095083552135 之前，通过 MQTT 接收到的设备名称（long_name、short_name）未经过净化处理就直接存储到 SQLite 数据库中，并且在渲染到 DOM（文档对象模型）时未进行转义处理。因此，任何连接到公共 Meshtastic MQTT 代理的参与者都可以设置一个恶意的节点名称，该名称会在所有 Malla 仪表板访问者的浏览器中执

CVSS 6.3 · Medium EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
zenitraM malla < 4086e2b5f61615a813b70b25bc76095083552135 affected
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I. Basic Information for CVE-2026-43980

Vulnerability Information
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Vulnerability Title
Malla: Stored XSS via Meshtastic node names in multiple frontend pages
Source: CVE Program / CVE List V5
Vulnerability Description
Malla is a web analyzer for Meshtastic networks based on MQTT data. Prior to commit 4086e2b5f61615a813b70b25bc76095083552135, code names (long_name, short_name) received via MQTT are stored in SQLite without sanitization and rendered into the DOM without escaping. Any participant on a public Meshtastic MQTT broker can set a malicious node name that executes JavaScript in the browser of every Malla dashboard visitor. Commit 4086e2b5f61615a813b70b25bc76095083552135 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
zenitraM malla < 4086e2b5f61615a813b70b25bc76095083552135 -

II. Public POCs for CVE-2026-43980

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III. Intelligence Information for CVE-2026-43980

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Vendor Advisories for CVE-2026-43980 (2)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-43980

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