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 v4.0

5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.51% chance of exploitation in the next 30 days, 42th percentile

Published

2026-01-27

Updated

2026-03-05

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49342

References

• CVE Record
• NVD entry

Related

• CVE-2020-36940
• CVE-2020-36942
• CVE-2020-36939
• CVE-2020-36943
• CVE-2020-36938
• CVE-2020-36944