CVE-2020-36941
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductGuelfoweb Knockpy
PublishedJan 27, 2026
First seenJan 27, 2026
Weakness typeCWE-1236CWE-1236
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| guelfoweb knockpy | 4.1.1 | — |
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