---
id: CVE-2020-36962
title: >-
  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
summary: >-
  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 t…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-1236
vendor: tendenci
product: tendenci
affected:
  - tendenci = 12.3.1
published: '2026-01-28'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:16:44.033'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-36962'
references:
  - url: 'https://github.com/tendenci/tendenci'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/49145'
    label: disclosure@vulncheck.com
  - url: 'https://www.tendenci.com/'
    label: disclosure@vulncheck.com
  - url: 'https://www.vulncheck.com/advisories/tendenci-csv-formula-injection'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/49145'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-01-28T20:01:26.865256Z'
epss: 0.12193
epssPercentile: 0.96066
ingestedAt: '2026-10-08T16:52:14.671Z'
---

## Overview

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.

## Affected

- `tendenci = 12.3.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.