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CVE-2026-42348

MEDIUM CVSS: 5.9 Published: 2026-05-12 Modified: 2026-06-17

Description

OpenTelemetry.OpAmp.Client is the OpAMP client for OpenTelemetry .NET. Prior to 0.2.0-alpha.1, when receiving responses from the OpAMP server over HTTP, the OpAMP client allocates an unbounded buffer to read all bytes from the server, with no upper-bound on the number of bytes consumed. This could cause memory exhaustion in the consuming application if the configured OpAMP server is attacker-controlled (or a network attacker can MitM the connection) and an extremely large body is returned in the response. This vulnerability is fixed in 0.2.0-alpha.1.

Affected Platforms

Opentelemetry Opentelemetry.Opamp.Client

Weakness Type

CWE-789

References