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CVE-2026-55664— Grist: Insufficient access control in the /forms endpoint exposes table metadata

Quick assessment

Affected
gristlabs grist-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

gristlabs grist-core是gristlabs公司的一款现代关系电子表格软件。 gristlabs grist-core 1.7.15之前版本存在安全漏洞，该漏洞源于GET /forms端点访问表与列元数据时未应用文档访问规则且未验证请求区段是否为表单，具有部分读取权限的用户（包括公共文档的公开访问用户）可请求任意部件元数据，泄露原本受访问规则隐藏的表和列结构。

CVSS 4.3 · Medium EPSS 0.33% · P26

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
gristlabs grist-core < 1.7.15 affected
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I. Basic Information for CVE-2026-55664

Vulnerability Information
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Vulnerability Title
Grist: Insufficient access control in the /forms endpoint exposes table metadata
Source: CVE Program / CVE List V5
Vulnerability Description
Grist 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
gristlabs grist-core 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gristlabs grist-core是gristlabs公司的一款现代关系电子表格软件。 gristlabs grist-core 1.7.15之前版本存在安全漏洞，该漏洞源于GET /forms端点访问表与列元数据时未应用文档访问规则且未验证请求区段是否为表单，具有部分读取权限的用户（包括公共文档的公开访问用户）可请求任意部件元数据，泄露原本受访问规则隐藏的表和列结构。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gristlabs grist-core < 1.7.15 -

II. Public POCs for CVE-2026-55664

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III. Intelligence Information for CVE-2026-55664

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Patches & Fixes for CVE-2026-55664 (1)

Vendor Advisories for CVE-2026-55664 (1)

Other References for CVE-2026-55664 (1)

Same Patch Batch · gristlabs · 2026-07-10 · 3 CVEs total

CVE-2026-55659 7.7 HIGH Grist: XSS through unsafe value interpolation in server-rendered pages
CVE-2026-55665 DOM-based XSS in Grist via unsanitized links, enabling privilege escalation

IV. Related Vulnerabilities

Same product: grist-core
Same vendor: gristlabs
Same weakness: CWE-200