Unknown · Kafka-Sink-Azure-Kusto · CVE-2026-42316
**Name of the Vulnerable Software and Affected Versions**
kafka-sink-azure-kusto versions prior to 5.2.3
**Description**
The plugin fails to sanitize user-controlled values within the `kusto.tables.topics.mapping` configuration. Specifically, the `db`, `table`, `mapping`, and `format` fields are interpolated directly into Kusto Query Language (KQL) management and query commands using the `String.formatted()` function. An attacker with permissions to submit or edit Kafka Connect connector configurations can embed KQL metacharacters such as `;`, `|`, and `'` to execute arbitrary management commands. This allows for schema enumeration or modification, tampering with ingestion mappings, and altering streaming or retention policies on the target Azure Data Explorer database using the connector's service principal privileges.
**Recommendations**
Update kafka-sink-azure-kusto to version 5.2.3.