CVE-2021-26829: OpenPLC ScadaBR Cross-site Scripting Vulnerability

#openplc #scadabr #cybersecurity #vulnerability

CVE ID

CVE-2021-26829

Vulnerability Name

OpenPLC ScadaBR Cross-site Scripting Vulnerability

Project: OpenPLC
Product: ScadaBR

Date

Date Added: 2025-11-28
Due Date: 2025-12-19

Description

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

Known To Be Used in Ransomware Campaigns?

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