CVE-2026-111645
Received Received - Intake

Authenticated Document Modification in MrDoc

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: VulnCheck

Description
MrDoc through 1.1.1 contains a missing object-level authorization vulnerability in the ImportLocalDoc API that allows authenticated users to modify other users' documents and projects. Attackers can send PUT requests with arbitrary sort_data document ids to publish private drafts and reparent documents, or POST with arbitrary top_doc ids to inject documents.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-111645
EUVD
EUVD-2026-103067

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
zmister2016 MrDoc 0

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

MrDoc through version 1.1.1 has a missing object-level authorization vulnerability in the ImportLocalDoc API. Authenticated users can send PUT requests with arbitrary document IDs to publish private drafts or reparent documents, or POST requests with arbitrary top document IDs to inject documents. The vulnerability stems from a lack of proper authorization checks in these API endpoints.

Detection Guidance

To detect this vulnerability, inspect MrDoc API endpoints for PUT/POST requests to /import-local-doc or similar paths. Check if authenticated users can modify documents/projects without ownership checks. Review logs for unauthorized document publishing or reparenting actions.

Impact Analysis

This vulnerability allows attackers to modify or publish documents they do not own, exposing private draft content and corrupting document structures. It can lead to unauthorized access to sensitive information, data integrity issues, and potential project disruption by injecting malicious documents.

Compliance Impact

This vulnerability could violate compliance with GDPR and HIPAA by exposing private or sensitive documents to unauthorized users. GDPR requires protecting personal data, while HIPAA mandates safeguarding health information. Unauthorized access risks data breaches and non-compliance penalties.

Mitigation Strategies

Immediately update MrDoc to a patched version. If unavailable, implement object-level authorization checks in PUT/POST handlers for /import-local-doc. Ensure the existing check_user_doc_edit helper is enforced. Restrict document/project modifications to authorized users only.

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