CVE-2026-42348

Published: Mag 12, 2026 Last Modified: Mag 12, 2026

ExploitDB:

Other exploit source:

Google Dorks:

MEDIUM 5,9

Source: [email protected]

Attack Vector: network

Attack Complexity: high

Privileges Required: none

User Interaction: none

Scope: unchanged

Confidentiality: none

Integrity: none

Availability: high

Description

AI Translation Available

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.

789

Memory Allocation with Excessive Size Value

Draft

Abstraction: Variant Structure: Simple

Common Consequences

Security Scopes Affected:

Availability

Potential Impacts:

Dos: Resource Consumption (Memory)

Applicable Platforms

Languages: C, C++, Not Language-Specific

View CWE Details

https://github.com/open-telemetry/opentelemetry-dotnet-cont…

https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4116