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CVE-2020-36962 — Vulnerability in tendenci — CVE Details

MEDIUM

Tendenci is Vulnerable to CSV Formula Injection through its Contact Form Message Field

Published January 28, 2026Updated June 9, 2026Source: osv

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 the message field to trigger arbitrary command execution when the CSV is opened in spreadsheet applications.

Advisory Timeline

  • First published January 28, 2026 (257 days ago).
  • Last revised June 9, 2026 — 132 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update tendenci to 12.3.2 or later
pip install "tendenci>=12.3.2"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
tendenci
pypi
11.0, 11.0.1, 11.0.2, 11.0.3 (+684 more)12.3.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2020-36962?
Tendenci is Vulnerable to CSV Formula Injection through its Contact Form Message Field This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2020-36962?
CVE-2020-36962 affects tendenci. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-36962 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-4q3w-jgfx-4792
PYSEC-2026-136

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