Information disclosure in Apostrophecms Apostrophe

CVE-2026-112952

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.

Vulnerability class: Information Disclosure

Published .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-112952?
CVE-2026-112952 is a medium-severity vulnerability in Apostrophecms Apostrophe, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-10-20.
How severe is CVE-2026-112952?
Medium severity. CVSS v3 base score is 4.3 out of 10.