CVE-2021-26829

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Summary

CVECVE-2021-26829
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-06-11 12:15:00 UTC
Updated2021-06-21 17:52:00 UTC
DescriptionOpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.

Risk And Classification

EPSS: 0.069440000 probability, percentile 0.913780000 (date 2026-04-01)

CISA KEV: Listed on 2025-11-28; due 2025-12-19; ransomware use Unknown

Problem Types: CWE-79

CISA Known Exploited Vulnerability

VendorOpenPLC
ProductScadaBR
NameOpenPLC ScadaBR Cross-site Scripting Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
NotesThis 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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openplcproject Scadabr All All All All
Application Openplcproject Scadabr All All All All

References

ReferenceSourceLinkTags
[REPORT] Falhas de segurança em versões do ScadaBR - ScadaBR - Geral - ScadaBR MISC forum.scadabr.com.br
Stored Cross Site Scripting (XSS) allows Session Hijacking on ScadaBR CE 1.12.4 - Windows 7 x64 - YouTube MISC youtu.be
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev
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