CVE-2026-40182

OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry to a back-end/collector over gRPC or HTTP using OpenTelemetry Protocol format (OTLP), if the request results in a unsuccessful request (i.e. HTTP 4xx or 5xx), the response is read into memory with no upper-bound on the number of bytes consumed. This could cause memory exhaustion in the consuming application if the configured back-end/collector endpoint is attacker-controlled (or a network attacker can MitM the connection) and an extremely large body is returned by the response. This vulnerability is fixed in 1.15.2.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/open-telemetry/opentelemetry-dotnet/pull/6564	Issue Tracking Patch
https://github.com/open-telemetry/opentelemetry-dotnet/pull/7017	Issue Tracking Patch
https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-q834-8qmm-v933	Vendor Advisory
https://github.com/open-telemetry/opentelemetry-proto/pull/781	Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*

History

No history.

Information

Published : 2026-04-23 18:16

Updated : 2026-06-17 10:44

NVD link : CVE-2026-40182

Mitre link : CVE-2026-40182

CVE.ORG link : CVE-2026-40182

JSON object : View

Products Affected

opentelemetry

opentelemetry

CWE

CWE-789

Memory Allocation with Excessive Size Value

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