CVE-2026-40904 Chartbrew: Incorrect Access Control in dataset and dataRequest routes via team-scoped permission checks
Authenticated attackers can access and modify datasets and data requests across projects within the same team due to insufficient permission checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40904?
CVE-2026-40904 is a high-severity missing authorization vulnerability in chartbrew, published on 30 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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 multiple dataset and dataRequest endpoints that authorize low-privileged project members at the team level instead of binding the requested dataset_id, dataRequest id, and connection_id to the caller's allowed projects. An authenticated attacker who only has access to one project inside a team can read, execute, create, update, and delete datasets and data requests that belong to other projects in the same team. The issue is exploitable remotely with ordinary project-level credentials and leads to cross-project data disclosure and unauthorized use of victim-side database or API connections. This issue has been patched in version 5.0.0.
Weakness: CWE-284
Which versions are affected by CVE-2026-40904?
How do I fix CVE-2026-40904?
No fix has been published for CVE-2026-40904 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-40904 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40904 exists.
Sources
Also known as GHSA-jq95-gqww-vhm3.