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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-52850

Docmost: Broken access control in transclusion lookup API leaks sync-block content across private spaces

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

docmost docmost

  • < 0.90.1affected

References