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OpenPLC ScadaBR: ScadaBR Cross-site Scripting Vulnerability

OpenPLC ScadaBR

OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm. Added to CISA KEV on 2025-11-28.

Why this severity: CVSS 5.4 (CISA ADP, v3.1); actively exploited (CISA KEV)

Started: Nov 28, 2025
Closed: Nov 28, 2025
CVE: CVE-2021-26829

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Updated Nov 28, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Nov 28, 2025
CISA added CVE-2021-26829 to the KEV catalog (due 2025-12-19).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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