CVE Catalog

CVE-2026-42348

MediumCVSS 5.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.31%

24th percentile - higher than 24% of all known CVEs

Summary

Prior to 0.2.0-alpha.1, the OpenTelemetry.OpAmp.Client allocates an unbounded buffer to read all bytes from the OpAMP server over HTTP. This could cause memory exhaustion if the OpAMP server is attacker-controlled or the connection is intercepted.

Risk Assessment

An attacker could cause memory exhaustion and application unavailability by returning an extremely large response.

Recommendation

Update the OpenTelemetry.OpAmp.Client library to version 0.2.0-alpha.1 or later.

Related vulnerabilities

Original NVD description (English source)

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 data from NVD (NIST) · CISA KEV · EPSS