CVE-2026-112952: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in apostrophecms apostrophe
Description
ApostropheCMS versions prior to 4.34.0 have a vulnerability where the API endpoint POST /api/v1/@apostrophecms/doc/slugTaken allows any logged-in user to check if a slug is in use across all document types and visibility levels without permission filtering. This enables enumeration of slugs for private pages, drafts, and archived content. The issue is fixed in version 4.34.0.
CVSS v3.1
Score 4.3medium
Affected software
apostrophecms
apostrophe
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In ApostropheCMS before version 4.34.0, the API endpoint POST /api/v1/@apostrophecms/doc/slugTaken accepts a JSON body with a slug and returns a boolean indicating whether that slug is in use. This response does not enforce permission or document type filters, allowing any authenticated user, including editors, to enumerate slugs of private, draft, and archived documents. This constitutes an exposure of sensitive information (CWE-200). The vulnerability is addressed in version 4.34.0.
Potential Impact
The vulnerability allows authenticated users to discover the existence of private, draft, and archived content by enumerating slugs, potentially exposing sensitive information about unpublished or restricted documents. However, it does not allow modification or deletion of content. The CVSS score is 4.3 (medium severity), reflecting limited confidentiality impact without integrity or availability effects.
Mitigation Recommendations
Upgrade ApostropheCMS to version 4.34.0 or later, where this issue is fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-19T21:30:47.246Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad791022cdf04f656404df3
Added to database: 10/20/2026, 16:04:18 UTC
Last enriched: 10/20/2026, 16:18:47 UTC
Last updated: 10/20/2026, 19:06:08 UTC
Views: 10
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