Vulnerability Intelligence Report
OpenPLC ScadaBR Cross-site Scripting Vulnerability
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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
5.4
MEDIUM
Exploitability:2.3
Impact Score:2.8
EPSS Probability:48.05%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-79 ↗CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| scadabr | scadabr | all |
| linux | linux_kernel | all |
| microsoft | windows | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2021-02-05T00:00:00 |
| Published | 2021-06-11T11:05:23 |
| Last Updated | 2025-12-02T04:56:04 |
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