CVE-2026-40891

MEDIUM

5.3

Description

OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry over gRPC using the OpenTelemetry Protocol (OTLP), the exporter may parse a server-provided grpc-status-details-bin trailer during retry handling. Prior to the fix, a malformed trailer could encode an extremely large length-delimited protobuf field which was used directly for allocation, allowing excessive memory allocation and potential denial of service (DoS). This vulnerability is fixed in 1.15.2.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueADJACENT_NETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie4/23/2026

Derniere modification4/24/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-789

References

https://github.com/open-telemetry/opentelemetry-dotnet/pull/5980(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/pull/7064(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-mr8r-92fq-pj8p(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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