Grist: Insufficient access control in the /forms endpoint exposes table metadata

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Summary

CVECVE-2026-55664
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-10 21:16:56 UTC
Updated2026-07-10 21:16:56 UTC
DescriptionGrist is spreadsheet software using Python as its formula language. Prior to 1.7.15, the GET /forms endpoint read table and column metadata without applying the document's access rules and did not check that the requested section was actually a form. A user with only partial read access, including public access on a publicly viewable document, could request the metadata of any widget and reveal table and column structure that access rules would otherwise hide, even in documents that contain no forms. This issue is fixed in version 1.7.15.

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

Problem Types: CWE-200 | CWE-285 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-285 CWE-285: Improper Authorization

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 Gristlabs Grist-core affected < 1.7.15 Not specified

References

ReferenceSourceLinkTags
github.com/gristlabs/grist-core/security/advisories/GHSA-w2hc-w6cg-xvh9 [email protected] github.com
github.com/gristlabs/grist-core/releases/tag/v1.7.15 [email protected] github.com
github.com/gristlabs/grist-core/commit/14694156fe99c438c5f7a452ad367e933... [email protected] github.com
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