open-telemetry opentelemetry-go up to 1.39.x Environment Variable sdk/resource/host_id.go PATH untrusted search path

Summaryinfo

A vulnerability has been found in open-telemetry opentelemetry-go up to 1.39.x and classified as problematic. Affected by this vulnerability is an unknown functionality of the file sdk/resource/host_id.go of the component Environment Variable Handler. The manipulation of the argument PATH leads to untrusted search path. This vulnerability is documented as CVE-2026-24051. The attack needs to be performed locally. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in open-telemetry opentelemetry-go up to 1.39.x. It has been rated as critical. This issue affects an unknown part of the file sdk/resource/host_id.go of the component Environment Variable Handler. The manipulation of the argument PATH with an unknown input leads to a untrusted search path vulnerability. Using CWE to declare the problem leads to CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-24051 since 01/20/2026. The exploitation is known to be difficult. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1574 according to MITRE ATT&CK.

Upgrading to version 1.40.0 eliminates this vulnerability. Applying the patch d45961bcda453fcbdb6469c22d6e88a1f9970a53 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• open-telemetry

Name

• opentelemetry-go

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39

License

• open-source

Website

• Product: https://github.com/open-telemetry/opentelemetry-go/

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