CVE-2026-112952 ApostropheCMS: POST /api/v1/@apostrophecms/doc/slugTaken discloses existence of private/admin-only content to any authenticated user
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-112952?
CVE-2026-112952 is a medium-severity vulnerability in apostrophecms apostrophe, published on 20 Oct 2026.
Official description
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, 'POST /api/v1/@apostrophecms/doc/slugTaken' with body { "slug": "target-slug" } returns a boolean indicating whether a slug is in use across all document types and visibility levels, with no permission or type filter. Any logged-in user (including editors) can enumerate the slug space of private pages, drafts, and archived content. This issue is fixed in version 4.34.0.
Weakness: CWE-200
Which versions are affected by CVE-2026-112952?
2 open source packages ship an affected version, including apostrophe.
| Package | Affected | Fixed in |
|---|---|---|
apostrophe npm | All versions | 4.34.0 |
apostrophe npm | All versions | 4.34.0 |
How do I fix CVE-2026-112952?
Upgrade apostrophe to 4.34.0 or later.
Is CVE-2026-112952 being exploited?
There is no known exploitation of CVE-2026-112952 in the wild and no public exploit code.
Sources
Also known as GHSA-f66c-mpj2-3r8h.