CVE-2026-40891

MEDIUM

5.3

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung5.3

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

AngriffsvektorADJACENT_NETWORK

KomplexitatHIGH

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht4/23/2026

Zuletzt geandert4/24/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-789

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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