Is CVE-2026-55664 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-55664 being exploited in the wild.

How severe is CVE-2026-55664?

Medium severity, with a CVSS score of 4.3, published 10 July 2026.

Is there a fix for CVE-2026-55664?

A patch was published on 2026-06-10: Version 1.7.15 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-55664 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-55664?

Check whether you run Grist Labs Grist at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-55664: Grist Labs Grist improper authorization in GET /forms endpoint

CVE-2026-55664 · Severity: medium · CVSS 4.3 · Published 2026-07-10

Grist is a spreadsheet and database tool used for organizing and analyzing data. A security flaw allowed users with limited access to a document to bypass security rules and view the underlying structure of tables and columns they should not be able to see. While this does not expose the actual data within the cells, it reveals how the database is organized, which could expose sensitive business logic or internal naming conventions.

Technologies: Grist Labs Grist. Vendors: Grist Labs.

Quick answers

Is CVE-2026-55664 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-55664 being exploited in the wild.
How severe is CVE-2026-55664?: Medium severity, with a CVSS score of 4.3, published 10 July 2026.
Which products and versions are affected?: Grist Labs Grist < 1.7.15.
Is there a fix for CVE-2026-55664?: A patch was published on 2026-06-10: Version 1.7.15 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-55664 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-55664?: Check whether you run Grist Labs Grist at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An improper authorization vulnerability exists in the GET /forms endpoint of Grist. The endpoint was found to read table and column metadata directly from the document data instead of using the access-rule-aware 'fetchMetaTables' function. Additionally, the endpoint failed to verify if the requested section was actually a form. An attacker with at least partial read access (including public access) can exploit this by providing a section ID for any widget to retrieve metadata that should be restricted by access rules. This results in the exposure of table and column structures (CWE-200, CWE-285). The issue is resolved in version 1.7.15 by enforcing access-rule checks and validating that the requested section is a form.

Affected products

Grist Labs Grist < 1.7.15

Timeline

2026-06-10: patched: Version 1.7.15 released
2026-06-19: advisory: GitHub Security Advisory GHSA-w2hc-w6cg-xvh9 published
2026-07-10: disclosed: CVE-2026-55664 published to NVD

References

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