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    2 vulnerabilities by Koenkk

    CVE-2026-71279 (GCVE-0-2026-71279)

    Vulnerability from nvd – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:47
    VLAI
    Title
    Zigbee2MQTT External JS Extension Path Traversal Leading to Remote Code Execution
    Summary
    Zigbee2MQTT's ExternalJSExtension.getFilePath (lib/extension/externalJS.ts) joins a parameter received via an MQTT message (topic zigbee2mqtt/bridge/request/extension/save) into the extensions base path using path.join(basePath, name) with no sanitization. The extension handler only validates that the name ends in .js/.mjs/.cjs, writes the file, and then dynamically imports it via Node.js import, achieving remote code execution.
    Severity
    8.1 (High)
    CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-05 15:55 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Koenkk zigbee2mqtt Affected: 0 , ≤ 2.12.0 (semver)
    		Create a notification for this product.
    Date Public
    2026-08-05 12:26
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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    CVE-2026-71279 (GCVE-0-2026-71279)

    Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:47
    VLAI
    Title
    Zigbee2MQTT External JS Extension Path Traversal Leading to Remote Code Execution
    Summary
    Zigbee2MQTT's ExternalJSExtension.getFilePath (lib/extension/externalJS.ts) joins a parameter received via an MQTT message (topic zigbee2mqtt/bridge/request/extension/save) into the extensions base path using path.join(basePath, name) with no sanitization. The extension handler only validates that the name ends in .js/.mjs/.cjs, writes the file, and then dynamically imports it via Node.js import, achieving remote code execution.
    Severity
    8.1 (High)
    CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-05 15:55 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Koenkk zigbee2mqtt Affected: 0 , ≤ 2.12.0 (semver)
    		Create a notification for this product.
    Date Public
    2026-08-05 12:26
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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