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CVE-2026-40894

MEDIUM

5.3

Description

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/23/2026

Last Modified4/24/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-789

References

https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/pull/533(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j(security-advisories@github.com)

IOC Correlations

No correlations recorded

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