CVE-2020-36962 in the critical feed json
Tendenci 12.3.1 - CSV/ Formula Injection
published 2026-01-28 9 mo ago modified 2026-10-08 31 d ago also GHSA-4q3w-jgfx-4792 , PYSEC-2026-136 , EUVD-2020-30887
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 12.4%
- EPSS 12.4% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
12.36% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- exploit-db.com https://www.exploit-db.com/exploits/49145 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | 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 |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 5.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | tendenci | <12.3.2 <=12.3.1 |
12.3.2 |
Affected products
- Tendenci Tendenci
Classification
- Weakness
-
- CWE-1236 Improper Neutralization of Formula Elements in a CSV File
References
-
github.com
/tendenci/tendenci/commit/3e37622cac81440c5a1f97c39f112a2cf4a5450c
web
-
exploit-db.com
/exploits/49145
exploit, web, third-party-advisory, vdb-entry, evidence
-
tendenci.com
/
product, web
-
github.com
/tendenci/tendenci
product, package
-
vulncheck.com
/advisories/tendenci-csv-formula-injection
third-party-advisory, web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-36962
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/tendenci/PYSEC-2026-136.yaml
web
-
tendenci.com
web
-
github.com
/advisories/GHSA-4q3w-jgfx-4792
advisory
Sources
- CVE List CVE-2020-36962
- GitHub Advisory GHSA-4q3w-jgfx-4792
- NVD CVE-2020-36962
- OSV PYSEC-2026-136
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.