CVE-2021-26829β€”OpenPLC ScadaBR Cross-site Scripting Vulnerability

PUBLISHEDvulnerability record
2025-11-28 Β· last modified December 22, 2025

Metadata

CVE ID:
CVE-2021-26829
Project:
OpenPLC
Product:
ScadaBR
Date Added:
2025-11-28
Due Date:
2025-12-19
Last Updated:
December 22, 2025

Vulnerability Name

OpenPLC ScadaBR Cross-site Scripting Vulnerability

Description

OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

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.

Additional 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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