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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.

PUBLISHED Reserved 2026-01-27 | Published 2026-01-28 | Updated 2026-01-29 | Assigner VulnCheck




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Improper Neutralization of Formula Elements in a CSV File

Product status

12.3.1
affected

Credits

Mufaddal Masalawala finder

References

www.exploit-db.com/exploits/49145 exploit

www.exploit-db.com/exploits/49145 (ExploitDB-49145) exploit

www.tendenci.com/ (Official Vendor Homepage) product

github.com/tendenci/tendenci (Tendenci GitHub Repository) product

www.vulncheck.com/advisories/tendenci-csv-formula-injection (VulnCheck Advisory: Tendenci 12.3.1 - CSV/ Formula Injection) third-party-advisory

cve.org (CVE-2020-36962)

nvd.nist.gov (CVE-2020-36962)

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