Multiple @opentelemetry/instrumentation-* packages expose database username via unconditional db.user span attribute

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

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.

Source published

2 Oct 2026 19:50:24 UTC

Source modified

6 Oct 2026 16:40:55 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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.

Source published

Oct 2, 2026, 7:50:24 PM (timezone not stated)

Source modified

Oct 6, 2026, 4:40:55 PM (timezone not stated)

Observed here

11 Nov 2026 05:30:38 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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.

Source published

2 Oct 2026 20:17:01 UTC

Source modified

6 Oct 2026 17:17:16 UTC

Observed here

25 Oct 2026 04:17:29 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

### Impact Multiple `@opentelemetry/instrumentation-*` packages recorded the database connection username as the `db.user` span attribute on every instrumented database operation. This attribute was emitted unconditionally — it was not gated by `enhancedDatabaseReporting` or any other opt-in flag, and it was the **default** behaviour for all users of the affected packages until the patched releases shipped on 2026-07-23. The attribute is forwarded to every configured observability backend (Jaeger, Zipkin, Datadog, OTLP collectors, etc.). Depending on the database account naming convention in use, the exported value may reveal: - Internal service account names that disclose architecture topology. - Role-encoded usernames (e.g. `admin_readwrite`, `app_readonly_prod`) useful for privilege inference. - Database account naming patterns useful for credential enumeration. Affected packages (all are vulnerable from the first published version through the version listed below): | Package | Vulnerable range | Patched version | |---------|-----------------|-----------------| | `@opentelemetry/instrumentation-cassandra-driver` | `< 0.66.0` | `0.66.0` | | `@opentelemetry/instrumentation-knex` | `< 0.65.0` | `0.65.0` | | `@opentelemetry/instrumentation-mongoose` | `< 0.67.0` | `0.67.0` | | `@opentelemetry/instrumentation-mysql` | `< 0.67.0` | `0.67.0` | | `@opentelemetry/instrumentation-mysql2` | `< 0.67.0` | `0.67.0` | | `@opentelemetry/instrumentation-oracledb` | `< 0.46.0` | `0.46.0` | | `@opentelemetry/instrumentation-pg` | `< 0.73.0` | `0.73.0` | | `@opentelemetry/instrumentation-tedious` | `< 0.40.0` | `0.40.0` | ### Patches Fixed in the coordinated release on 2026-07-23 via [feat!: only emit stable http, network and database attributes (#3585)](https://github.com/open-telemetry/opentelemetry-js-contrib/pull/3585). Upgrade to the patched version listed in the table above for each instrumentation package in use. ### Workarounds No configuration-level workaround exists in the affected versions: the `db.user` attribute cannot be suppressed without patching. As a partial mitigation, a custom `SpanProcessor` can be used to strip `db.user` from spans before they leave the process: ```ts // Example: drop db.user in a custom SpanProcessor class StripDbUserProcessor implements SpanProcessor { onStart(span: Span) { span.setAttribute('db.user', null); } onEnd() {} shutdown() { return Promise.resolve(); } forceFlush() { return Promise.resolve(); } } ``` Users who control the downstream collector can also filter the attribute at the collector pipeline level.

Source published

5 Oct 2026 22:52:44 UTC

Source modified

5 Oct 2026 23:00:05 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Publisher rating · MODERATE