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Vulnerability · Published Sep 8, 2026 · Assigned by GitHub_M

CVE-2026-81192OpenTelemetry.Resources.Host vulnerable to arbitrary code execution via local PATH hijacking on macOS

High 7.0

In plain English

A high-severity security flaw in opentelemetry-dotnet-contrib from open-telemetry. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.2%top 92.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

`OpenTelemetry.Resources.Host` NuGet package, which provides OpenTelemetry resource detectors for host, is affected by an untrusted search path vulnerability on macOS. Prior to version 1.16.0-beta.2, 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. This vulnerability only affect macOS hosts - Linux and Windows hosts are unaffected. Version 1.16.0-beta.2 contains a patch. No known workarounds are available.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
NuGetopentelemetry.resources.host1.16.0-beta.2GHSA-v8pv-4842-x354

Affected products (as reported)

VendorProductVersions
open-telemetry opentelemetry-dotnet-contrib < 1.16.0-beta.2

Weakness: CWE-426 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References