CVE-2026-86418
Received Received - Intake

Information Exposure in MISP Dashboard Organisation Picker

Vulnerability report for CVE-2026-86418, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-07

Last updated on: 2026-09-07

Assigner: CIRCL

Description

Affected versions of MISP expose organisation metadata through the dashboard organisation picker without applying the same visibility restrictions enforced by the normal organisation index and per-organisation view. The affected endpoint returned fields including: * organisation ID; * UUID; * name. When Security.hide_organisation_index_from_users was enabled, normal organisation enumeration was restricted, but the dashboard picker still queried all organisations. This allowed authenticated users to discover organisations that should have remained hidden from them. The fix calls Organisation::createConditions($this->Auth->user()) and appends the resulting ACL conditions to the picker query. Ordinary users are thereby limited to organisations associated with events or proposals they can already see, plus their own organisation, while users with the appropriate sharing-group privilege retain broader visibility. Version affected: ≀2.5.45

CVSS Scores

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Meta Information

Published
2026-09-07
Last Modified
2026-09-07
Generated
2026-09-07
AI Q&A
2026-09-07
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
misp misp to 2.5.45 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

This vulnerability in MISP (≀2.5.45) allows authenticated users to view hidden organisation metadata through the dashboard organisation picker endpoint. Even when the setting Security.hide_organisation_index_from_users is enabled to restrict organisation visibility, the picker still returns all organisations including their IDs, UUIDs, and names. This bypasses intended access controls.

Detection Guidance

To detect this vulnerability, check if the MISP dashboard organisation picker exposes organisation metadata (ID, UUID, name) to users who should not have access. Verify if the Security.hide_organisation_index_from_users setting is enabled but organisations are still visible in the picker. Compare the picker's output with the restricted organisation index.

Impact Analysis

An attacker with authenticated access could discover organisations that should remain hidden, potentially revealing sensitive information about internal structures, partnerships, or restricted groups. This could aid further attacks or violate data confidentiality policies.

Compliance Impact

This vulnerability could lead to unauthorised disclosure of organisation data, violating principles of data minimisation and access control required by GDPR and HIPAA. It may result in non-compliance with privacy and security requirements.

Mitigation Strategies

Immediately update MISP to version 2.5.46 or later to apply the fix. Ensure the Security.hide_organisation_index_from_users setting is enabled. Review user permissions to confirm only authorised users can access organisation metadata.

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