CVE-2026-52850 — Docmost: Broken access control in transclusion lookup API leaks sync-block content across private spaces
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 tran…
Published: 2026-09-24 · CVSS: 4.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7