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CVE-2026-45292

opentelemetry-java: Unbounded Memory Allocation in W3C Baggage Propagation

opentelemetry-java is the Java implementation of the OpenTelemetry API for recording telemetry, and SDK for managing telemetry recorded by the API. Prior to 1.62.0, a vulnerability affects the baggage propagation implementation in opentelemetry-api and opentelemetry-extension-trace-propagators. Parsing oversized baggage causes unbounded memory allocation and CPU consumption. Because baggage is automatically re-injected into every outgoing request, the effect can fan out to downstream services that never received the original malicious request. This vulnerability is fixed in 1.62.0.

CVSS 3.1 · 5.3 Medium EPSS 1.1% KEV · Not listed
Vendors
Opentelemetry
Products
Opentelemetry-java Opentelemetry.api Opentelemetry.extensions.propagators
CVE-2026-40894

OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers

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.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Opentelemetry
Products
Opentelemetry Opentelemetry-dotnet Opentelemetry.api and 1 more