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CVE-2026-55680 – Unauthenticated SQL Injection – WeGIA before 3.8.6

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Summary

CVE-2026-55680 is an unauthenticated SQL injection vulnerability (CWE-89) in WeGIA, a web application from LabRedesCefetRJ. It affects all versions before 3.8.6 and has a critical CVSS v3.1 score of 9.8. A remote attacker can run arbitrary SQL against the application database without logging in.

Technical details

  • Root cause: cadastro_cobranca.php uses extract($_REQUEST). This passes the codigo parameter into the WHERE codigo= clause of an UPDATE statement with no validation or parameter binding.
  • Trigger conditions: The attacker places a quoted SQL expression in the codigo parameter. This bypasses MariaDB type conversion.
  • Attack vector: Network. No authentication and no user interaction are required.
  • Impact: An attacker can read sensitive database content, including user credentials and billing records. They can also modify entries in the cobrancas table and execute arbitrary SQL.

Affected software

  • WeGIA (LabRedesCefetRJ): all versions prior to 3.8.6

Severity

  • CVSS v3.1 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

Mitigation and recommended actions

  • Immediate: Upgrade WeGIA to version 3.8.6 or later.
  • If you cannot patch immediately: The advisory documents no workarounds. As a general precaution, restrict network access to WeGIA instances that are exposed to the internet until you can upgrade.

References

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