Chartbrew: Incorrect Access Control in public chart and export routes via missing onReport and SharePolicy checks

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Summary

CVECVE-2026-40595
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-30 19:16:09 UTC
Updated2026-05-01 15:31:02 UTC
DescriptionChartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In version 4.9.0, Chartbrew exposes public chart retrieval and export routes that only verify project-level public access and, for exports, a team-level export toggle. The routes do not verify whether the target chart is actually allowed on the public report or whether the governing SharePolicy permits public access. An unauthenticated attacker who knows a chart identifier in a public project can read or export chart data for charts that were intentionally hidden from the report. This issue has been patched in version 5.0.0.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.000480000 probability, percentile 0.145640000 (date 2026-05-05)

Problem Types: CWE-284 | CWE-284 CWE-284: Improper Access Control

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Chartbrew Chartbrew affected = 4.9.0 Not specified

References

ReferenceSourceLinkTags
github.com/chartbrew/chartbrew/security/advisories/GHSA-mq7q-6xh6-5649 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/chartbrew/chartbrew/releases/tag/v5.0.0 [email protected] github.com
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