# OpenPLC vulnerabilities

Source: https://junglewise.ai/threats/vendors/openplc  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/openplc.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 2 vulnerabilities in OpenPLC: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 2 exploited in the wild. The most recent, CVE-2021-26828, was published on 3 December 2025. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 2 (2 critical, 2 exploited in the wild)

## About OpenPLC

Open-source programmable logic controller platform for industrial automation.

## Latest OpenPLC vulnerabilities

- [CVE-2021-26828: OpenPLC ScadaBR unrestricted file upload in view_edit.shtm](https://junglewise.ai/threats/cve-2021-26828-openplc-scadabr-unrestricted-file-upload-in-view-edit-shtm) (critical, exploited in the wild, CVSS 8.8, published 3 Dec 2025)
- [CVE-2021-26829: OpenPLC ScadaBR stored XSS in system_settings.shtm](https://junglewise.ai/threats/cve-2021-26829-openplc-scadabr-stored-xss-in-system-settings-shtm) (critical, exploited in the wild, CVSS 5.4, published 28 Nov 2025)

## Most severe OpenPLC vulnerabilities

- [CVE-2021-26828: OpenPLC ScadaBR unrestricted file upload in view_edit.shtm](https://junglewise.ai/threats/cve-2021-26828-openplc-scadabr-unrestricted-file-upload-in-view-edit-shtm) (critical, exploited in the wild, CVSS 8.8, published 3 Dec 2025)
- [CVE-2021-26829: OpenPLC ScadaBR stored XSS in system_settings.shtm](https://junglewise.ai/threats/cve-2021-26829-openplc-scadabr-stored-xss-in-system-settings-shtm) (critical, exploited in the wild, CVSS 5.4, published 28 Nov 2025)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## OpenPLC technologies

- [OpenPLC SCADABr](https://junglewise.ai/threats/technologies/scadabr): 8 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "OpenPLC vulnerabilities", https://junglewise.ai/threats/vendors/openplc, 9 November 2026.