CVE-2026-52850
Docmost: Broken access control in transclusion lookup API leaks sync-block content across private spaces
- State
- Published
- Severity
- 4.3 Medium
- Published
- Sep 24, 2026
- Updated
- Sep 29, 2026
- Reserved
- Jun 8, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
docmostdocmost |
|
References
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