---
id: CVE-2026-117563
title: MrDoc through 1.1.1 Broken Access Control via manage_doc_share
summary: >-
  MrDoc through 1.1.1 contains a broken access control vulnerability in the
  manage_doc_share type 3 branch that allows authenticated users to modify other
  users' document share settings because updates lack an ownership check.
  Attackers ca…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: zmister2016
product: MrDoc
affected:
  - MrDoc <= 1.1.1
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T13:07:57.656Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117563'
references:
  - url: 'https://github.com/zmister2016/MrDoc/issues/208'
    label: 'GitHub Issue #208'
  - url: 'https://github.com/zmister2016/MrDoc'
  - url: >-
      https://github.com/zmister2016/MrDoc/commit/2cd13ff0659dbef9aea59d5af122a21204942262
  - url: >-
      https://github.com/zmister2016/MrDoc/blob/v1.1.1/app_doc/views.py#L1835-L1849
  - url: >-
      https://www.vulncheck.com/advisories/mrdoc-through-1.1.1-broken-access-control-via-manage-doc-share
    label: >-
      VulnCheck Advisory: MrDoc through 1.1.1 Broken Access Control via
      manage_doc_share
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.336Z'
---

## Overview

MrDoc through 1.1.1 contains a broken access control vulnerability in the manage_doc_share type 3 branch that allows authenticated users to modify other users' document share settings because updates lack an ownership check. Attackers can compute predictable share tokens from the MD5 of document ID and username to re-enable disabled shares or remove access codes, exposing private documents.

## Affected

- `MrDoc <= 1.1.1`

## Remediation

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