CVE-2024-32028

OpenTelemetry dotnet is a dotnet telemetry framework. In affected versions of `OpenTelemetry.Instrumentation.Http` and `OpenTelemetry.Instrumentation.AspNetCore` the `url.full` writes attribute/tag on spans (`Activity`) when tracing is enabled for outgoing http requests and `OpenTelemetry.Instrumentation.AspNetCore` writes the `url.query` attribute/tag on spans (`Activity`) when tracing is enabled for incoming http requests. These attributes are defined by the Semantic Conventions for HTTP Spans. Up until version `1.8.1` the values written by `OpenTelemetry.Instrumentation.Http` & `OpenTelemetry.Instrumentation.AspNetCore` will pass-through the raw query string as was sent or received (respectively). This may lead to sensitive information (e.g. EUII - End User Identifiable Information, credentials, etc.) being leaked into telemetry backends (depending on the application(s) being instrumented) which could cause privacy and/or security incidents. Note: Older versions of `OpenTelemetry.Instrumentation.Http` & `OpenTelemetry.Instrumentation.AspNetCore` may use different tag names but have the same vulnerability. The `1.8.1` versions of `OpenTelemetry.Instrumentation.Http` & `OpenTelemetry.Instrumentation.AspNetCore` will now redact by default all values detected on transmitted or received query strings. Users are advised to upgrade. There are no known workarounds for this vulnerability.

• CWE-201
• CWE-212

• https://github.com/open-telemetry/opentelemetry-dotnet/commit/e222ecb5942d4ce1cadfd4306c39e3f4933a5c42
• https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-vh2m-22xx-q94f
• https://github.com/open-telemetry/semantic-conventions/blob/main/docs/http/http-spans.md
• https://github.com/open-telemetry/opentelemetry-dotnet/commit/e222ecb5942d4ce1cadfd4306c39e3f4933a5c42
• https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-vh2m-22xx-q94f
• https://github.com/open-telemetry/semantic-conventions/blob/main/docs/http/http-spans.md

Published

Apr 12, 2024

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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