ApostropheCMS: POST /api/v1/@apostrophecms/doc/slugTaken discloses existence of private/admin-only content to any authenticated user (apostrophecms apostrophe)

CVE-2026-112952

MEDIUM 4.3

At a glance

Source: NVD
EPSS: EPSS 0.33 % · percentile 27 (2026-10-31)
State: PUBLISHED
Published: 2026-10-20 15:44 UTC
Updated: 2026-10-21 15:53 UTC
Assigner: GitHub_M
NVD status: Deferred

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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.

Weaknesses (CWE)

CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	GitHub_M
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	NVD · security-advisories@github.com (Secondary)

Advisories

GHSA-f66c-mpj2-3r8h — ApostropheCMS: POST /api/v1/@apostrophecms/doc/slugTaken discloses existence of private/admin-only content to any authenticated user

European references

ENISA EUVD · EUVD-2026-105102
GCVE · GCVE-0-2026-112952

Affected products

Product	Versions
apostrophecms · apostrophe	affected < 4.34.0

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD

🟡 ApostropheCMS: POST /api/v1/@apostrophecms/doc/slugTaken discloses existence of private/admin-only content to any authenticated user (apostrophecms apostrophe)