CVE-2026-42348: OpAMP client reads unbounded HTTP response bodies
(updated )
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.
References
- github.com/advisories/GHSA-w2jh-77fq-7gp8
- github.com/open-telemetry/opentelemetry-dotnet-contrib/commit/bf1fad4fa298ff451cda0efb0ee9c7a7eb46212a
- github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4116
- github.com/open-telemetry/opentelemetry-dotnet-contrib/security/advisories/GHSA-w2jh-77fq-7gp8
- nvd.nist.gov/vuln/detail/CVE-2026-42348
Code Behaviors & Features
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