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CVE-2026-52850

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

Description (CNA)

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 (CNA)

Vendor / productVersions
docmost / docmostaffected < 0.90.1

CWE

CWE-639, CWE-862

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.