CSV Formula Injection Vulnerability in Tendenci by Tendenci
CVE-2020-36962

5.3MEDIUM

Key Information:

Vendor

Tendenci

Status
Tendenci
Vendor
CVE Published:
28 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36962?

Tendenci 12.3.1 is susceptible to a CSV formula injection vulnerability that arises in the contact form's message field. This vulnerability permits attackers to inject malicious payloads containing executable commands, leading to potential arbitrary command execution once the CSV file is processed in various spreadsheet applications. By leveraging carefully crafted inputs, such as the example '=10+20+cmd|' /C calc'!A0', malicious actors can exploit this weakness, emphasizing the importance of secure data handling in web applications.

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Affected Version(s)

Tendenci 12.3.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36962 - Proof of Concept

References

https://www.exploit-db.com/exploits/49145
exploit
https://www.tendenci.com/
product
https://github.com/tendenci/tendenci
product

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mufaddal Masalawala
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