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CVE-2026-40894

OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
open-telemetry / opentelemetry-dotnetaffected >= 0.5.0-beta.2, < 1.15.3
open-telemetry / OpenTelemetry.Apiaffected >= 0.5.0-beta.2, < 1.15.3
open-telemetry / OpenTelemetry.Extensions.Propagatorsaffected >= 1.3.1, < 1.15.3

CWE

CWE-789

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.