CVE-2021-41110
9.1 · CRITICALOverview
CVE-2021-41110 is a critical-severity vulnerability affecting commonwl cwlviewer. It was published on October 1, 2021 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
cwlviewer is a web application to view and share Common Workflow Language workflows. Versions prior to 1.3.1 contain a Deserialization of Untrusted Data vulnerability. Commit number f6066f09edb70033a2ce80200e9fa9e70a5c29de (dated 2021-09-30) contains a patch. There are no available workarounds aside from installing the patch. The SnakeYaml constructor, by default, allows any data to be parsed. To fix the issue the object needs to be created with a `SafeConstructor` object, as seen in the patch.
Remediation
Check the references section for vendor advisories and patches from commonwl. Update cwlviewer 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 |
|---|---|---|---|
| commonwl | cwlviewer | >= 0, < 1.3.1 | Affected |
References
Frequently Asked Questions
What is CVE-2021-41110?
CVE-2021-41110 is a critical-severity vulnerability affecting commonwl cwlviewer. It was published on October 1, 2021 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2021-41110?
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-41110?
Check the references section for vendor advisories and patches from commonwl. Update cwlviewer 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-2021-41110?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-41110 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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