CVE-2021-26829

OpenPLC ScadaBR Cross-site Scripting Vulnerability

OpenPLC — ScadaBR

Added to KEV catalog: 28 November 2025
Federal remediation due date: 19 December 2025
Weakness classification (CWE): CWE-79

CISA Description

OpenPLC ScadaBR contains a cross-site scripting vulnerability 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

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/SCADA-LTS/Scada-LTS/pull/3211 ; https://nvd.nist.gov/vuln/detail/CVE-2021-26829

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More OpenPLC Vulnerabilities

CVE-2021-26828

OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability

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