What is CVE-2026-91198?

CVE-2026-91198 is a medium-severity vulnerability in Growthbook, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.3/10. Published 2026-09-14.

How severe is CVE-2026-91198?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Growthbook

CVE-2026-91198

GrowthBook through 5.0.1 returns unredacted fact table definitions including raw warehouse SQL in payloads served by unauthenticated public report and experiment endpoints. Attackers with knowledge of a publicly shared report or experiment identifier can read internal data warehouse query text, schema, table names, filter values and datasource identifiers.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Growthbook

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-91198?: CVE-2026-91198 is a medium-severity vulnerability in Growthbook, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.3/10. Published 2026-09-14.
How severe is CVE-2026-91198?: Medium severity. CVSS v3 base score is 5.3 out of 10.