CVE-2026-63099
Received Received - Intake

TheHive Broken Object-Level Authorization in Attachment Download

Publication date: 2026-07-17

Last updated on: 2026-07-17

Assigner: VulnCheck

Description
TheHive through 4.1.24 contains a broken object-level authorization vulnerability in the attachment download endpoints that allows any authenticated user to access attachments belonging to other organizations by supplying a content-hash identifier. Attackers can exploit the missing organization-scoped authorization check in AttachmentSrv.visible, which is implemented as a pass-through traversal, to download arbitrary attachments.

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Meta Information

Published
2026-07-17
Last Modified
2026-07-17
Generated
2026-07-17
AI Q&A
2026-07-17
EPSS Evaluated
N/A
NVD
CVE-2026-63099
EUVD
EUVD-2026-45197

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
thehive_project thehive to 4.1.24 (inc)
thehive_project thehive to 4.1.24 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This vulnerability is a broken object-level authorization issue in TheHive through version 4.1.24. It allows any authenticated user to access attachments belonging to other organizations by providing a content-hash identifier. The flaw exists because the AttachmentSrv.visible function lacks organization-scoped authorization checks, enabling attackers to download arbitrary attachments across different organizations.

Detection Guidance

To detect this vulnerability, check TheHive version. If it is 4.1.24 or earlier, the system is vulnerable. No specific commands are provided in the context, but monitoring for unauthorized attachment downloads or unusual access patterns may help.

Impact Analysis

This vulnerability can lead to unauthorized access to sensitive attachments across organizations. Attackers with valid credentials can exploit it to steal confidential data, including files containing personal or organizational information, potentially leading to data breaches or privacy violations.

Compliance Impact

This vulnerability can severely impact compliance with GDPR and HIPAA by enabling unauthorized access to sensitive personal or health data. GDPR requires strict access controls and data protection, while HIPAA mandates safeguards for protected health information. Exploitation could result in regulatory penalties, legal liabilities, and reputational damage.

Mitigation Strategies

Immediately upgrade TheHive to a version beyond 4.1.24 if available. If upgrading is not possible, restrict access to attachment download endpoints and enforce strict organization-scoped authorization checks.

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