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    CVE-2021-26829

    OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.

    Published:Jun 11, 2021
    Last Modified:Dec 2, 2025
    EPS:Jun 11, 2021
    EPSS Score:0.52128
    CVSS Score:5.4

    CISA Notification

    Description

    OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.

    Required Action:

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

    Notes:

    No extra notes provided.

    Due Date
    Dec 19, 2025
    266 days ago
    Alert Date
    Nov 28, 2025
    287 days ago

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Scadabr
    Product
    Scadabr

    Exploits

    https://youtu.be/Xh6LPCiLMa8https://youtu.be/Xh6LPCiLMa8

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High