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      <title>CVE-2026-40894 — OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-40894</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; open-telemetry opentelemetry-dotnet, open-telemetry OpenTelemetry.Api, open-telemetry OpenTelemetry.Extensions.Propagators&lt;/p&gt;
&lt;p&gt;OpenTelemetry dotnet is a dotnet telemetry framework. In OpenTelemetry.Api 0.5.0-beta.2 to 1.15.2 and OpenTelemetry.Extensions.Propagators 1.3.1 to 1.15.2, The implementation details of the baggage, B3 and Jaeger processing code in the OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators NuGet packages can allocate excessive memory when parsing which could create a potential denial of service (DoS) in the consuming application. This vulnerability is fixed in 1.15.3.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; open-telemetry opentelemetry-dotnet, open-telemetry OpenTelemetry.Api, open-telemetry OpenTelemetry.Extensions.Propagators&lt;/p&gt;
&lt;p&gt;OpenTelemetry dotnet is a dotnet telemetry framework. In OpenTelemetry.Api 0.5.0-beta.2 to 1.15.2 and OpenTelemetry.Extensions.Propagators 1.3.1 to 1.15.2, The implementation details of the baggage, B3 and Jaeger processing code in the OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators NuGet packages can allocate excessive memory when parsing which could create a potential denial of service (DoS) in the consuming application. This vulnerability is fixed in 1.15.3.&lt;/p&gt;</content:encoded>
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