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GrowthBook CVE-2026-91198

| EUVDEUVD-2026-78207 MEDIUM
Insertion of Sensitive Information Into Sent Data (CWE-201)
2026-09-14 disclosure@vulncheck.com GHSA-gv2h-crgm-gfwc
6.9
CVSS 4.0 · Vendor: vulncheck
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Severity by source

Vendor (vulncheck) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.3 MEDIUM

Network-reachable with no authentication required per PR:N; confidentiality impact is low because only SQL/schema metadata is disclosed, not warehouse data; no integrity or availability impact applies.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck).

CVSS VectorVendor: vulncheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 15, 2026 - 08:03 vuln.today

DescriptionCVE.org

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.

AnalysisAI

GrowthBook through version 5.0.1 leaks raw warehouse SQL queries, schema details, table names, filter values, and datasource identifiers via unauthenticated public report and experiment endpoints. Any party who obtains a publicly shared report or experiment identifier can retrieve these internal data warehouse details without authentication. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires that a GrowthBook user has intentionally used the platform's public sharing feature to share a report or experiment, generating an accessible public identifier. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.9 with AV:N/AC:L/PR:N/UI:N and VC:L reflects a straightforwardly network-reachable, unauthenticated disclosure path, but practical risk is gated on whether an organization has enabled public report or experiment sharing - an intentional user action rather than a default-open configuration. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to upgrade GrowthBook to a version beyond 5.0.1 once a patched release is published; monitor GitHub issue #6541 and the repository at github.com/growthbook/growthbook for a tagged release that redacts warehouse SQL and schema fields from public endpoint serialization, as no specific fixed version number is confirmed in the available data. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-91198 vulnerability details – vuln.today

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