Docmost: Page export can include restricted same-space attachments through forged attachmentId

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-48073
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 19:17:13 UTC
Updated2026-09-24 20:17:29 UTC
DescriptionDocmost is open-source collaborative wiki and documentation software. From 0.70.0 until 0.80.1, a low-privileged authenticated user who can edit an exportable page can embed a forged attachmentId that belongs to a restricted page in the same space. Exporting the attacker-controlled page with includeAttachments=true causes the page export flow to read the restricted attachment from storage and include it in the returned ZIP archive even though direct file download denies access. This issue is fixed in version 0.80.1.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS: 0.001930000 probability, percentile 0.079610000 (date 2026-09-25)

Problem Types: CWE-639 | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Docmost Docmost affected >= 0.70.0, < 0.80.1 Not specified

References

ReferenceSourceLinkTags
github.com/docmost/docmost/releases/tag/v0.80.1 [email protected] github.com
github.com/docmost/docmost/security/advisories/GHSA-rxm9-xp9h-4c84 [email protected] github.com
github.com/docmost/docmost/commit/a573acedd0317f3472cb0f8b95f6aa15315312e5 [email protected] github.com
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