CVE-2026-42348
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
5.9 / 10
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability 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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-789
Source
GitHub
Vendor
nuget
Product
OpenTelemetry.OpAmp.Client
External References
- https://github.com/open-telemetry/opentelemetry-dotnet-contrib/security/advisories/GHSA-w2jh-77fq-7gp8
- https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4116
- https://github.com/open-telemetry/opentelemetry-dotnet-contrib/commit/bf1fad4fa298ff451cda0efb0ee9c7a7eb46212a
- https://github.com/advisories/GHSA-w2jh-77fq-7gp8
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