Is CVE-2026-52850 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-52850?

CVE-2026-52850 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-52850

Description

Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace member who does not belong to a private space can call the transclusion / sync-block lookup API with a known sourcePageId and transclusionId pair because the lookup does not enforce private space membership before resolving the source page. The API can return confidential sync-block content and source page metadata even though the normal page APIs deny access to the same page. This issue is fixed in version 0.90.1.