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vulnerability / NVI-00016432 / Revision 1

OpenTelemetry.Resources.Host vulnerable to arbitrary code execution via local PATH hijacking on macOS

GitHub lists this reviewed advisory for OpenTelemetry.Resources.Host. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.

source listedactiveGHSA-v8pv-4842-x354CVE-2026-81192

This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.

01 / Meaning

Why it matters

Published affected context helps an owner decide what evidence to gather. This report has not examined your application.

CVSS

7 high

GitHub source severity; exploitability and local consequence require separate evidence.

As of · GitHub Advisory Database

02 / Applicability

The affected context

Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.

OpenTelemetry.Resources.Host

source listed
  • < 1.16.0-beta.2

### Summary The `OpenTelemetry.Resources.Host` NuGet package is affected by an untrusted search path vulnerability on macOS. The `host.id` resource attribute detector launches the `sh` and `ioreg` executables by bare name rather than by absolute path, so both are resolved through the `PATH` environment variable. A local attacker who is less privileged than the host application, and who can influence `PATH` or write to a directory that appears in `PATH` ahead of the system directories, can have an arbitrary binary executed in the application's security context, resulting in local code execution/privilege escalation. ### Details The implementation of the host detector macOS has always invoked `ioreg` and `sh` via their bare names since it was implemented by open-telemetry/opentelemetry-dotnet-contrib#1631. The vulnerability was fixed by open-telemetry/opentelemetry-dotnet-contrib#4760 which executes `ioreg` directly using its absolute path. ### Impact Applications running on **macOS** that use the `OpenTelemetry.Resources.Host`

GitHub Advisory Database

03 / Response

What to do next

  1. investigate

    Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.

    Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database

A fixed release is not deployment evidence.

Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.

04 / Limits

What this report cannot establish

  • Customer inventory, deployment, reachability and exploitation have not been inspected.
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05 / Provenance

Sources you can inspect

Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.

  1. GHSA-v8pv-4842-x354 ↗

    GitHub Advisory Database · vendor advisory

    Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.

Public revision history

Only published revisions appear here. Routine fetches do not create a material-change event.

  1. Revision 1 ·

    First indexed by Null; source disclosure date is shown separately.

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The next step is private

Bring the question into your environment.

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