CVE-2020-36941

Knockpy 4.1.1 - CSV Injection

Published Jan 27, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Guelfoweb knockpy
CPEs cpe:2.3:a:guelfoweb:knockpy:4.1.1:*:*:*:*:*:*:*
Vendors & Products Guelfoweb knockpy
Type Values Removed Values Added
First Time appeared Verbb
Verbb knock Knock
CPEs cpe:2.3:a:verbb:knock_knock:4.1.1:*:*:*:*:*:*:*
Vendors & Products Verbb
Verbb knock Knock
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Guelfoweb
Guelfoweb knock
Vendors & Products Guelfoweb
Guelfoweb knock
Type Values Removed Values Added
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.
Title Knockpy 4.1.1 - CSV Injection
Weaknesses CWE-1236
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Mar 5, 2026, 1:27 AM
Reserved
Jan 25, 2026, 1:50 PM
Status
Analyzed
Published
Jan 27, 2026, 4:16 PM
Modified
Jun 17, 2026, 3:16 AM