What is CVE-2026-55664?

CVE-2026-55664 is a medium-severity vulnerability in Gristlabs Grist-core, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-07-10.

How severe is CVE-2026-55664?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Gristlabs Grist-core

CVE-2026-55664

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 actua…

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Gristlabs Grist-core — versions < 1.7.15

Weakness classification (CWE)

CWE-200 — Information Disclosure
CWE-285 — Improper Authorization

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-55664?: CVE-2026-55664 is a medium-severity vulnerability in Gristlabs Grist-core, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-07-10.
How severe is CVE-2026-55664?: Medium severity. CVSS v3 base score is 4.3 out of 10.