Tendenci 12.3.1 - CSV/ Formula Injection | Advisories

Advisories

Tendenci 12.3.1 - CSV/ Formula Injection

severity: medium
date: January 28, 2026
Affecting: Tendenci 12.3.1
CVE: CVE-2020-36962
CWE: CWE-1236 Improper Neutralization of Formula Elements in a CSV File
CVSS: 5.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
References: ExploitDB-49145
Official Vendor Homepage
Tendenci GitHub Repository
Credit: Mufaddal Masalawala
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.