Vulnerability in Tendenci
CVE-2020-36962
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 · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.122 (96.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.109 · newest: 0.122 · change: +0.013
Affected products
- Tendenci — versions 12.3.1
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49145 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.tendenci.com/ (Product, product)
- github.com/tendenci/tendenci (Product, product)
- www.vulncheck.com/advisories/tendenci-csv-formula-injection (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-36962?
- CVE-2020-36962 is a critical-severity vulnerability in Tendenci, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 9.8/10. Published 2026-01-28.
- How severe is CVE-2020-36962?
- Critical severity. CVSS v3 base score is 9.8 out of 10.