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CVE-2026-86274— projeto-siga Authentication Flow ExAutenticacaoController.java ExAutenticacaoController.autenticar authorization

Quick assessment

Affected
projeto-siga siga
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 项目中检测到一个安全漏洞，影响版本：11.0.2.10 / 11.0.2.13 / 11.1.1。该漏洞位于组件“Authentication Flow”中，具体影响文件 中的 函数。对参数 的不当处理会导致授权缺失。该攻击可远程发起。该利用方式已公开披露，可能被利用。项目方已提前通过问题报告得知此问题，但尚未做出回应。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-86274

Vulnerability Information
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Vulnerability Title
projeto-siga Authentication Flow ExAutenticacaoController.java ExAutenticacaoController.autenticar authorization
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in projeto-siga siga up to 11.0.2.10/11.0.2.13/11.1.1. This affects the function ExAutenticacaoController.autenticar of the file sigaex/src/main/java/br/gov/jfrj/siga/vraptor/ExAutenticacaoController.java of the component Authentication Flow. Such manipulation of the argument cod/jwt leads to missing authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
projeto-siga siga 11.0.2.0 cpe:2.3:a:projeto-siga:siga:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-86274

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III. Intelligence Information for CVE-2026-86274

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Vendor Advisories for CVE-2026-86274 (1)

Other References for CVE-2026-86274 (3)

IV. Related Vulnerabilities

Same product: siga
Same vendor: projeto-siga
Same weakness: CWE-862

V. Comments for CVE-2026-86274

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