CVE-2026-42348
5.9 MEDIUMOpenTelemetry.OpAmp.Client is the OpAMP client for OpenTelemetry .NET
Published: 2026-05-12 · Last updated: 2026-05-27
Severity and scoring
- CVSS
- 5.9 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-789
Affected products
| Vendor | Product |
|---|---|
| opentelemetry | opentelemetry.opamp.client |
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.
Source: NVD
References
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