Vulnerability in OpenTelemetry.Resources.Host (CVE-2026-81192)
Summary
Vulnerability in OpenTelemetry.Resources.Host (CVE-2026-81192). Successful exploitation can lead to full system takeover. Exploitable via OpenTelemetry.Resources.Host. Mitigation: upgrade to 1.16.0-beta.2 or later.
Original description
The description as published by the source.
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 detector when an attacker who is less privileged than the application process can influence PATH or write to a PATH directory that precedes the system directories (e.g. a higher-privileged service with a user-writable directory in its search path, or a process inheriting an attacker-influence…
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-81192 has been found in OpenTelemetry.Resources.Host.
Attackers can target a specific entry point like OpenTelemetry.Resources.Host over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 7.0/10.
What to do: upgrade OpenTelemetry.Resources.Host to 1.16.0-beta.2 or later.
If unsure, ask your IT team or search "OpenTelemetry.Resources.Host CVE-2026-81192" on the vendor's site.
CVE-2026-81192 (OpenTelemetry.Resources.Host) — CWE-426 / CVSS v3 7.0
Attack vector: local / no user interaction
Attack surface: OpenTelemetry.Resources.Host / host.id / ioreg / PATH
Patched: 1.16.0-beta.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-426) exists in OpenTelemetry.Resources.Host. Attackers reach the vulnerable code path via OpenTelemetry.Resources.Host.
Check the vendor advisory for the affected versions of OpenTelemetry.Resources.Host. Attack surface: OpenTelemetry.Resources.Host / host.id / ioreg / PATH.
Severity: High (CVSS 7.0/10). Successful exploitation can lead to full system takeover.
Update to 1.16.0-beta.2.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'OpenTelemetry.Resources.Host' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'OpenTelemetry.Resources.Host' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
OpenTelemetry.Resources.Hostを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade OpenTelemetry.Resources.Host to 1.16.0-beta.2ステージング環境で 1.16.0-beta.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- web github.com
- web github.com
- web github.com
- web nvd.nist.gov
- web github.com