CVE-2020-36962

CRITICAL

Tendenci 12.3.1 - CSV Formula Injection via Contact Form Message Field

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-36962. PoCs published by Mufaddal Masalawala.

AI-analyzed exploit summary This exploit demonstrates a CSV formula injection vulnerability in Tendenci 12.3.1, where a malicious payload in the 'Contact Us' message field is executed when exported to a CSV file and opened in Excel.

Description

Tendenci 12.3.1 contains a CSV formula injection vulnerability in the contact form message field that allows attackers to inject malicious formulas during export. Attackers can submit crafted payloads like '=10+20+cmd|' /C calc'!A0' in the message field to trigger arbitrary command execution when the CSV is opened in spreadsheet applications.

Exploits (1)

exploitdb WORKING POC
by Mufaddal Masalawala · textwebappsmultiple
https://www.exploit-db.com/exploits/49145

This exploit demonstrates a CSV formula injection vulnerability in Tendenci 12.3.1, where a malicious payload in the 'Contact Us' message field is executed when exported to a CSV file and opened in Excel.

Classification
Working Poc 90%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: Tendenci 12.3.1
Auth required
Prerequisites: Access to the 'Contact Us' form · Ability to export form entries as CSV · Victim to open the CSV file in Excel
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory, VDB Entry exploit
https://www.exploit-db.com/exploits/49145
Product product
https://www.tendenci.com/

Scores

CVSS v3 9.8
EPSS 0.0035
EPSS Percentile 57.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1236
Status published
Products (2)
pypi/tendenci 0 - 12.3.2PyPI
tendenci/tendenci 12.3.1
Published Jan 28, 2026
Tracked Since Feb 18, 2026