---
id: CVE-2026-94394
title: >-
  When a regular user adds a reference between objects or attributes, MISP
  checks whether the user can access the overall event, but it does not always
  check whether the individual pieces of data are also allowed for that user.


  Because of…
summary: >-
  When a regular user adds a reference between objects or attributes, MISP
  checks whether the user can access the overall event, but it does not always
  check whether the individual pieces of data are also allowed for that user.


  Because of…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N'
cwe:
  - CWE-862
vendor: MISP
product: MISP
affected:
  - MISP < 2.5.47
published: '2026-09-21'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T15:17:39.643'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94394'
references:
  - url: 'https://github.com/MISP/MISP/commit/f36634e57'
    label: 5a6e4751-2f3f-4070-9419-94fb35b644e8
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T14:35:25.970564Z'
cvssSource: cna
ingestedAt: '2026-09-21T13:37:22.829Z'
epss: 0.00351
epssPercentile: 0.25938
---

## Overview

When a regular user adds a reference between objects or attributes, MISP checks whether the user can access the overall event, but it does not always check whether the individual pieces of data are also allowed for that user.

Because of this, someone who can view an event could potentially access attributes or objects inside that event that were meant to be restricted to a specific sharing group or distribution level.

The vulnerability affects authenticated users who are not site administrators and who already have access to an event containing more restricted data.

The main impact is that users may be able to view sensitive attribute values, object details, or related object data that they should not normally be allowed to see.

## Remediation

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