OpenTelemetry opentelemetry-js-contrib prior 0.73.0 cassandra-driver information disclosure

Summaryinfo

A vulnerability was found in OpenTelemetry opentelemetry-js-contrib. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component cassandra-driver/knex/mongoose/mysql/mysql2/oracledb/pg/tedious. This manipulation causes information disclosure. This vulnerability is registered as CVE-2026-104872. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenTelemetry opentelemetry-js-contrib. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component cassandra-driver/knex/mongoose/mysql/mysql2/oracledb/pg/tedious. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

OpenTelemetry JavaScript Contrib provides instrumentation libraries for collecting telemetry from JavaScript applications. Prior to versions 0.66.0 of @opentelemetry/instrumentation-cassandra-driver, 0.65.0 of @opentelemetry/instrumentation-knex, 0.67.0 of @opentelemetry/instrumentation-mongoose, @opentelemetry/instrumentation-mysql, and @opentelemetry/instrumentation-mysql2, 0.46.0 of @opentelemetry/instrumentation-oracledb, 0.73.0 of @opentelemetry/instrumentation-pg, and 0.40.0 of @opentelemetry/instrumentation-tedious, the packages add the database connection username to every instrumented database operation as the db.user span attribute. The attribute is emitted by default and is not controlled by enhancedDatabaseReporting or another opt-in setting. Configured observability backends therefore receive database account names that may expose service topology, role or environment information, and account naming patterns. This issue is fixed in versions 0.66.0, 0.65.0, 0.67.0, 0.46.0, 0.73.0, and 0.40.0 of the respective packages.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-104872 since 10/02/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 0.66.0, 0.65.0, 0.67.0, 0.46.0, 0.73.0 or 0.40.0 eliminates this vulnerability. Applying the patch 27e172a9e0d549559056ccd58f27d13467454156 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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• OpenTelemetry

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• opentelemetry-js-contrib

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CPE 2.2info

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