CVE-2020-36941

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/guelfoweb/knock
https://www.exploit-db.com/exploits/49342
https://www.vulncheck.com/advisories/knockpy-csv-injection
https://github.com/guelfoweb/knock

Configurations

No configuration.

History

27 Jan 2026, 22:15

Type	Values Removed	Values Added
References	~~() https://github.com/guelfoweb/knock -~~	() https://github.com/guelfoweb/knock -

27 Jan 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-27 16:16

Updated : 2026-01-29 16:31

NVD link : CVE-2020-36941

Mitre link : CVE-2020-36941

CVE.ORG link : CVE-2020-36941

JSON object : View

Products Affected

No product.

CWE

CWE-1236

Improper Neutralization of Formula Elements in a CSV File

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