CVE-2021-26829
Cross-site Scripting in OpenPLC ScadaBR. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 28 November 2025.
- Product
- OpenPLC ScadaBR
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.
More from OpenPLC this year.
- CVE-2021-26828 Unrestricted Upload of File with Dangerous Type, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 3 November 2026.