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CVE-2026-55684 – Unauthenticated SQL Injection – WeGIA before 3.8.6

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Summary

CVE-2026-55684 is a critical unauthenticated SQL injection vulnerability (CWE-89) in WeGIA, a web manager for charitable institutions. A remote attacker can execute arbitrary SQL through the html/socio/sistema/cadastro_cobrancas_geracao.php endpoint. The CVSS v3.1 base score is 9.8 (Critical).

Technical details

  • Root cause: The endpoint html/socio/sistema/cadastro_cobrancas_geracao.php uses extract($_REQUEST) and interpolates multiple unvalidated parameters directly into raw SQL INSERT statements.
  • Trigger conditions: The endpoint is reachable without authentication. No user interaction is required.
  • Attack vector: Network. A remote attacker sends crafted HTTP request parameters.
  • Impact: An attacker can execute arbitrary SQL to read or modify billing, member, employee, permission, and credential data.

Affected software

  • WeGIA 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, which fixes this issue.
  • If you cannot patch right away, restrict network access to WeGIA instances, for example to trusted networks or a VPN, until the upgrade is done. Also consider blocking external access to the affected endpoint. These are general precautions and are not vendor-published workarounds.
  • Review database and application logs for unexpected requests to cadastro_cobrancas_geracao.php.

References

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