CVE-2021-39286
6.1 · MEDIUMOverview
CVE-2021-39286 is a medium-severity vulnerability affecting webrecorder pywb. It was published on August 18, 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
Webrecorder pywb before 2.6.0 allows XSS because it does not ensure that Jinja2 templates are autoescaped.
Remediation
Check the references section for vendor advisories and patches from webrecorder. Update pywb 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 |
|---|---|---|---|
| webrecorder | pywb | >= 0, < 2.6.0 | Affected |
Frequently Asked Questions
What is CVE-2021-39286?
CVE-2021-39286 is a medium-severity vulnerability affecting webrecorder pywb. It was published on August 18, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
How severe is CVE-2021-39286?
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-2021-39286?
Check the references section for vendor advisories and patches from webrecorder. Update pywb 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-2021-39286?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-39286 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
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