---
id: CVE-2026-57447
title: >-
  Discourse Doc Categories: Doc category index refresh leaks private topic
  titles
summary: >-
  Discourse Doc Categories is a plugin for organizing Discourse topics as
  documentation. Prior to the verified source fix, the doc category index
  refresh resolves linked titles for private messages or restricted category
  topics without enf…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-200
vendor: discourse
product: discourse-doc-categories
affected:
  - discourse-doc-categories < b15d4de02ad29d7c9525346afee51fef4a2c605a
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T16:32:06.608343Z'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:06:24.293Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-57447'
references:
  - url: >-
      https://github.com/discourse/discourse-doc-categories/security/advisories/GHSA-x63p-48vw-8r64
    label: >-
      https://github.com/discourse/discourse-doc-categories/security/advisories/GHSA-x63p-48vw-8r64
  - url: >-
      https://github.com/discourse/discourse-doc-categories/commit/b15d4de02ad29d7c9525346afee51fef4a2c605a
    label: >-
      https://github.com/discourse/discourse-doc-categories/commit/b15d4de02ad29d7c9525346afee51fef4a2c605a
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.842Z'
---

## Overview

Discourse Doc Categories is a plugin for organizing Discourse topics as documentation. Prior to the verified source fix, the doc category index refresh resolves linked titles for private messages or restricted category topics without enforcing the viewer's authorization. A user who can edit the index topic can use this behavior to learn titles that the user is not authorized to view, although the advisory does not establish access to topic contents. This vulnerability is addressed by commit b15d4de02ad29d7c9525346afee51fef4a2c605a.

## Affected

- `discourse-doc-categories < b15d4de02ad29d7c9525346afee51fef4a2c605a`

## Remediation

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