🛡️ CVE-2026-40182
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-789 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-789
Public Exploit ✅ No
Source NVD
Published 2026-04-23
Updated 2026-06-10
Modified 2026-04-29

Affected Packages

Software From version Fixed in
opentelemetry 1.13.1 1.15.2
opentelemetry.exporter.opentelemetryprotocol 1.13.1 1.15.2

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