Security readout for executives and security teams
Plain-English summary
Tendenci 12.3.1 contact-form messages can be exported to CSV with attacker-supplied spreadsheet formulas. If staff open that export in a spreadsheet application, the formula may execute with the user’s context. This is serious for organizations using affected Tendenci exports, but sources do not show confirmed active exploitation.
Executive priority
Prioritize if Tendenci 12.3.1 is internet-facing and staff routinely open exported contact-form CSVs. The business risk is compromise of staff workstations or data through a trusted administrative workflow, not direct server takeover shown by the sources.
Technical view
CVE-2020-36962 is a CSV/formula injection issue in Tendenci 12.3.1, mapped to CWE-1236. The vulnerable input is the contact form message field, later included in CSV export. Public sources include an ExploitDB entry and VulnCheck advisory. The CVSS vector claims no user interaction, but the described impact depends on opening the CSV in spreadsheet software.
Likely exposure
Exposure is likely limited to organizations running Tendenci 12.3.1 and exporting contact form submissions to CSV. Risk increases when administrators or staff open those exports in spreadsheet applications without sanitization or safe handling.
Exploitation context
A public exploit reference exists, but the provided sources do not establish active exploitation. Practical exploitation requires an attacker to submit malicious contact-form content and a trusted user to open the exported CSV in a spreadsheet application.
Researcher notes
Evidence supports a CSV injection flaw and public exploit publication. The source bundle does not name an official patch, fixed version, or active exploitation. There is a notable mismatch between the CVSS user-interaction field and the described need to open the CSV.
Mitigation direction
- Check Tendenci vendor guidance and repository for fixed versions or official remediation.
- If running 12.3.1, prioritize upgrade planning or vendor-supported remediation.
- Restrict who can export or open contact-form CSV files.
- Treat exported CSV files as untrusted until sanitization is confirmed.
- Warn staff not to open suspicious CSV exports in spreadsheet applications.
Validation and detection
- Inventory Tendenci deployments and confirm whether version 12.3.1 is present.
- Identify whether contact form submissions are exported to CSV.
- Review CSV export handling for spreadsheet formula sanitization.
- Check contact-form submissions for suspicious formula-like message content.
- Confirm whether vendor guidance or repository updates address this issue.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-1236: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-36962 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49145CVE reference · exploit
- Official Vendor HomepageCVE reference · product
- Tendenci GitHub RepositoryCVE reference · product
- VulnCheck Advisory: Tendenci 12.3.1 - CSV/ Formula InjectionCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Formula Elements in a CSV File
Improper Neutralization of Formula Elements in a CSV File represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.