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CVE-2020-36941

9.8 · CRITICAL
Published Jan 27, 2026 guelfoweb CWE-1236 EPSS 0.51% (42th pctl)

Overview

CVE-2020-36941 is a critical-severity vulnerability affecting guelfoweb knockpy. It was published on January 27, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

Knockpy 4.1.1 contains a CSV injection vulnerability that allows attackers to inject malicious formulas into CSV reports through unfiltered server headers. Attackers can manipulate server response headers to include spreadsheet formulas that will execute when the CSV is opened in spreadsheet applications.

Remediation

Check the references section for vendor advisories and patches from guelfoweb. Update knockpy 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

Frequently Asked Questions

What is CVE-2020-36941?

CVE-2020-36941 is a critical-severity vulnerability affecting guelfoweb knockpy. It was published on January 27, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2020-36941?

This vulnerability has a CVSS 3.1 base score of 9.8, 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-2020-36941?

Check the references section for vendor advisories and patches from guelfoweb. Update knockpy 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-2020-36941?

CyberStrike's AI-powered security agents can automatically detect CVE-2020-36941 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.