Chartbrew 4.9.0 Normal Registration Endpoint /user/invited missing authentication

Summaryinfo

A vulnerability was found in Chartbrew 4.9.0. It has been classified as critical. Impacted is an unknown function of the file /user/invited of the component Normal Registration Endpoint. The manipulation leads to missing authentication. This vulnerability is referenced as CVE-2026-35514. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Chartbrew 4.9.0 and classified as critical. This issue affects an unknown code block of the file /user/invited of the component Normal Registration Endpoint. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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, the endpoint POST /user/invited does not validate any invite token, authentication header, or session. Any unauthenticated attacker can call this endpoint directly to create a fully active account and receive a valid JWT — even when the instance has existing users and signupRestricted is enabled. This bypass is distinct from the normal registration endpoint (POST /user) which enforces signupRestricted and sets active: false pending verification. This issue has been patched in version 5.0.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-35514 since 04/03/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading to version 5.0.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Name

• Chartbrew

Version

• 4.9.0

Website

• Product: https://github.com/chartbrew/chartbrew/

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