What is CVE-2026-40603?

CVE-2026-40603 is a medium-severity vulnerability in Chartbrew, classified under Improper Access Control. CVSS score: 6.5/10. Published 2026-04-30.

How severe is CVE-2026-40603?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Chartbrew

CVE-2026-40603

Chartbrew 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 a legacy dashboard route that returns a project's report data to any authent…

EPSS: 0.000 (11.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Chartbrew — versions = 4.9.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

https://github.com/chartbrew/chartbrew/security/advisories/GHSA-6qr3-g75h-xm3f (x_refsource_CONFIRM)
https://github.com/chartbrew/chartbrew/releases/tag/v5.0.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40603?: CVE-2026-40603 is a medium-severity vulnerability in Chartbrew, classified under Improper Access Control. CVSS score: 6.5/10. Published 2026-04-30.
How severe is CVE-2026-40603?: Medium severity. CVSS v3 base score is 6.5 out of 10.