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Vulnerability record · CVE-2026-81192 · published 8 September 2026

CVE-2026-81192: Untrusted search path vulnerability

`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.

7.0 CVSS 3.1 High EPSS 0.18% · top 93.5% CWE-426 · Untrusted search path Deferred
7.0CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
10 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/1631
https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4760
https://github.com/open-telemetry/opentelemetry-dotnet-contrib/security/advisories/GHSA-v8pv-4842-x354

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Source: NIST National Vulnerability Database (record CVE-2026-81192), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.