CVE-2021-3377
6.1 · MEDIUMOverview
CVE-2021-3377 is a medium-severity vulnerability affecting ansi_up_project ansi_up. It was published on March 5, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The npm package ansi_up converts ANSI escape codes into HTML. In ansi_up v4, ANSI escape codes can be used to create HTML hyperlinks. Due to insufficient URL sanitization, this feature is affected by a cross-site scripting (XSS) vulnerability. This issue is fixed in v5.0.0.
Remediation
Check the references section for vendor advisories and patches from ansi_up_project. Update ansi_up 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 |
|---|---|---|---|
| ansi_up_project | ansi_up | >= 0, < 5.0.0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-3377?
CVE-2021-3377 is a medium-severity vulnerability affecting ansi_up_project ansi_up. It was published on March 5, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
How severe is CVE-2021-3377?
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-3377?
Check the references section for vendor advisories and patches from ansi_up_project. Update ansi_up 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-2021-3377?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-3377 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.
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