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 products
opentelemetry: opentelemetry.opamp.client
References2
- github.com/open-telemetry/opentelemetry-dotnet-contrib/security… PatchVendor Advisory
- github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4116 Issue Tracking
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 24 · as of 14 November 2026
- CWE
- CWE-789
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