Chartbrew up to 5.2.0 SQL Dashboard Variable Substitution applyMysqlOrPostgresVariables code injection

Summaryinfo

A vulnerability marked as critical has been reported in Chartbrew up to 5.2.0. This vulnerability affects the function applyMysqlOrPostgresVariables of the component SQL Dashboard Variable Substitution. The manipulation leads to code injection. This vulnerability is traded as CVE-2026-54349. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Chartbrew up to 5.2.0 and classified as critical. This issue affects the function applyMysqlOrPostgresVariables of the component SQL Dashboard Variable Substitution. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. 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. Prior to 5.2.1, SQL dashboard-variable substitution used attacker-controlled JavaScript replacement strings unsafely across SQL connectors and separately failed to escape backslashes for MySQL and MariaDB quoted contexts. The vulnerable surface is public and embedded dashboard/chart requests that call applyMysqlOrPostgresVariables. An unauthenticated user sends crafted URL filter values to a public or embedded chart backed by a stored SQL query. Replacement-string dollar sequences can alter SQL independently of the database engine, while MySQL and MariaDB backslash handling provides a second quoted-string escape path. The target must expose a public or embedded chart using URL-controlled variables in a SQL query; only the backslash branch is specific to MySQL and MariaDB. Injected SQL can read, modify, or delete data available to the configured database account. This issue is fixed in version 5.2.1.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-54349 since 06/12/2026. 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. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 5.2.1 eliminates this vulnerability.

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Productinfo

Name

• Chartbrew

Version

• 5.0
• 5.1
• 5.2.0

Website

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

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