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CVE-2026-42348

7.5 high SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · opentelemetryNVD modified 2026-10-26 18:10

Affected (CPE criteria) 1

  • cpe:2.3:a:opentelemetry:opentelemetry.opamp.client:*:*:*:*:*:.net:*:*

References 2