CVE-2021-28667
7.5 · HIGHOverview
CVE-2021-28667 is a high-severity vulnerability affecting stackstorm stackstorm. It was published on March 18, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
StackStorm before 3.4.1, in some situations, has an infinite loop that consumes all available memory and disk space. This can occur if Python 3.x is used, the locale is not utf-8, and there is an attempt to log Unicode data (from an action or rule name).
Remediation
Check the references section for vendor advisories and patches from stackstorm. Update stackstorm to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| stackstorm | stackstorm | >= 0, < 3.4.1 | Affected |
| python | python | >= 0, < 3.0.0 | Affected |
Frequently Asked Questions
What is CVE-2021-28667?
CVE-2021-28667 is a high-severity vulnerability affecting stackstorm stackstorm. It was published on March 18, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-28667?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-28667?
Check the references section for vendor advisories and patches from stackstorm. Update stackstorm to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-28667?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-28667 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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