CVE-2021-26829
Last modified
CVE-2021-26829 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.. CISA has confirmed active exploitation in the wild. EPSS estimates a 48.05% chance of exploitation in the next 30 days.
Description
OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Scadabr | Scadabr | <= 0.9.1 |
| Scadabr | Scadabr | <= 1.12.4 |
References
- https://youtu.be/Xh6LPCiLMa8Exploit, Third Party Advisory
- https://youtu.be/Xh6LPCiLMa8Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26829US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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