CVE-2026-61671

HIGH CVSS 8.1 PoC Available

Published: 2026-10-29

Modified: 2026-10-30

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AI Threat Summary

CVE-2026-61671 is a high-severity vulnerability with a CVSS score of 8.1 affecting the target software. Threat hunters should monitor for exploit attempts and apply vendor patches immediately.

Description

WeGIA is a web manager for charitable institutions. Prior to the advisory's stated patched version 3.8.7, the `/controle/control.php` dispatch endpoint accepts attacker-controlled `nomeClasse`, `metodo`, and record identifier parameters through `extract($_REQUEST)`, including id, `idatendido`, `idInterno`, and `id_funcionario`, while the affected Controle CRUD methods do not verify record ownership. Any authenticated user can view, modify, or delete another user's records, exposing CPF, RG, addresses, medical records, financial data, and employee records. `AtendidoControle` lacks ownership checks on alterar, excluir, `listarUm`, `alterarInfPessoal`, `alterarDocumentacao`, `alterarImagem`, `alterarEndereco`, and `alterarStatus`; `InternoControle` lacks them on incluir, alterar, excluir, `listarUm`, `listarTodos`, and `listarCpf`. `FuncionarioControle` lacks ownership checks on `alterarInfPessoal`, `alterarEndereco`, `alterarDocumentacao`, `alterarImagem`, `alterarCargaHoraria`, and excluir; `VoluntarioControle` lacks them on `alterarInfPessoal`, `alterarEndereco`, `alterarDetalhes`, `alterarImagem`, and excluir. `AtendidoControle` and `InternoControle` additionally lack CSRF validation, allowing a malicious page visited by an authenticated victim to perform state-changing operations using the victim's session. `FuncionarioControle` and `VoluntarioControle` have per-method CSRF checks, but those checks do not prevent the object-authorization bypass. The advisory identifies version 3.8.7 as patched.

Attack Chain

Reconnaissance

Attacker scans for vulnerable versions using version banners or PoC scanners

Initial Access

Attacker triggers CVE-2026-61671 vulnerability with a crafted request or payload

Execution

Vulnerability exploited to perform unauthorized actions on the target system

Impact

Depending on vulnerability type, attacker achieves data access, service disruption, or code execution

MITRE ATT&CK Techniques

T1190 Exploit Public-Facing Application

Initial Access

Public-facing application vulnerability exploited for initial access

T1203 Exploitation for Client Execution

Execution

Vulnerability exploited to execute attacker-controlled code

Indicators of Compromise

Type	Value	Description
user_agent	`Mozilla/5.0 (compatible; exploit/1.0)`	Generic exploit scanner user agent pattern
url	`/api/vuln-endpoint?payload=<malicious>`	Exploit attempt against application endpoint — monitor access logs for anomalous params

Remediation

1. Apply vendor-supplied security patches immediately. 2. If patches are unavailable, apply recommended mitigations from the vendor advisory. 3. Enable WAF rules or IDS signatures to detect exploitation attempts. 4. Monitor logs for indicators of compromise listed above. 5. Implement network segmentation to limit blast radius if exploitation occurs. 6. Subscribe to vendor security advisories for this product.

Quick Facts

CVE ID	CVE-2026-61671
CVSS Score	8.1
Vector	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`
Published	2026-10-29
Exploited	No
CISA KEV	No
PoC	Available

References

External Resources

NVD Entry BleepingComputer The Hacker News