---
id: CVE-2026-86274
title: >-
  A security vulnerability has been detected in projeto-siga siga up to
  11.0.2.10/11.0.2.13/11.1.1
summary: >-
  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/ExAutenticacaoContr…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-862
  - CWE-863
vendor: projeto-siga
product: siga
affected:
  - siga 11.0.2.0
  - siga 11.0.2.1
  - siga 11.0.2.2
  - siga 11.0.2.3
  - siga 11.0.2.4
  - siga 11.0.2.5
  - siga 11.0.2.6
  - siga 11.0.2.7
  - siga 11.0.2.8
  - siga 11.0.2.9
  - siga 11.0.2.10
  - siga 11.0.2.11
  - siga 11.0.2.12
  - siga 11.0.2.13
  - siga 11.1.0
  - siga 11.1.1
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T17:18:39.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86274'
references:
  - url: 'https://github.com/projeto-siga/siga/'
    label: cna@vuldb.com
  - url: 'https://github.com/projeto-siga/siga/issues/2493'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86274'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/904871'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399435'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399435/cti'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/904871'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00429
epssPercentile: 0.36771
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-08T16:02:49.641036Z'
ingestedAt: '2026-09-08T17:06:31.935Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.