OpenPLC 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 (federal deadline 2025-12-19).

First seen: 28 Nov 2025
Last update: 28 Nov 2025, 12:00 UTC
Identifiers: CVE-2021-26829
Source: CISA KEV

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## OpenPLC ScadaBR Cross-site Scripting Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: OpenPLC ScadaBR
Ids: CVE-2021-26829

OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm. Added to CISA KEV on 2025-11-28 (federal deadline 2025-12-19).

## Steps
1. Search the repo, its CI and infra config for OpenPLC ScadaBR. If present, report the version in use and whether it's affected.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2021-26829") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2021-26829
https://pwned.coffee/i/openplc-scadabr-cross-site-scripting-vulnerability-cve-2021-26829

Sources

NVD: CVE-2021-26829

Totalone hot coffee