CVE-2026-39883: CWE-426: Untrusted Search Path in open-telemetry opentelemetry-go
OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.15.0 to 1.42.0, the fix for CVE-2026-24051 changed the Darwin ioreg command to use an absolute path but left the BSD kenv command using a bare name, allowing the same PATH hijacking attack on BSD and Solaris platforms. This vulnerability is fixed in 1.43.0.
AI Analysis
Technical Summary
OpenTelemetry-Go versions 1.15.0 through 1.42.0 contain an untrusted search path vulnerability (CWE-426) due to the use of a bare command name for the BSD kenv command, which can be hijacked via the PATH environment variable on BSD and Solaris systems. This issue arose after a partial fix for a similar vulnerability on Darwin platforms. The vulnerability allows local attackers with low privileges to potentially execute arbitrary code or commands by manipulating the PATH. The issue is resolved in version 1.43.0 where absolute paths are used consistently.
Potential Impact
The vulnerability allows local attackers with limited privileges to exploit the untrusted search path to execute arbitrary commands by placing malicious binaries earlier in the PATH. This can lead to privilege escalation or unauthorized code execution on BSD and Solaris platforms where the vulnerable versions are deployed. The CVSS 4.0 score of 7.3 reflects high impact with local attack vector, high complexity, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in opentelemetry-go version 1.43.0. Users should upgrade to version 1.43.0 or later to remediate this vulnerability. Red Hat advisories provide additional guidance for affected Red Hat products. There is no indication that the vulnerability is mitigated by configuration changes or other workarounds; upgrading is the recommended remediation.
CVE-2026-39883: CWE-426: Untrusted Search Path in open-telemetry opentelemetry-go
Description
OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.15.0 to 1.42.0, the fix for CVE-2026-24051 changed the Darwin ioreg command to use an absolute path but left the BSD kenv command using a bare name, allowing the same PATH hijacking attack on BSD and Solaris platforms. This vulnerability is fixed in 1.43.0.
CVSS v4.0
Score 7.3high
Affected software
pkg:golang/github.com/open-telemetry/opentelemetry-goRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenTelemetry-Go versions 1.15.0 through 1.42.0 contain an untrusted search path vulnerability (CWE-426) due to the use of a bare command name for the BSD kenv command, which can be hijacked via the PATH environment variable on BSD and Solaris systems. This issue arose after a partial fix for a similar vulnerability on Darwin platforms. The vulnerability allows local attackers with low privileges to potentially execute arbitrary code or commands by manipulating the PATH. The issue is resolved in version 1.43.0 where absolute paths are used consistently.
Potential Impact
The vulnerability allows local attackers with limited privileges to exploit the untrusted search path to execute arbitrary commands by placing malicious binaries earlier in the PATH. This can lead to privilege escalation or unauthorized code execution on BSD and Solaris platforms where the vulnerable versions are deployed. The CVSS 4.0 score of 7.3 reflects high impact with local attack vector, high complexity, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in opentelemetry-go version 1.43.0. Users should upgrade to version 1.43.0 or later to remediate this vulnerability. Red Hat advisories provide additional guidance for affected Red Hat products. There is no indication that the vulnerability is mitigated by configuration changes or other workarounds; upgrading is the recommended remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-07T20:32:03.010Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-39883","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:26257","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:26254","vendor":"Red Hat"}]
Threat ID: 69d6bfa81cc7ad14dab01abc
Added to database: 04/08/2026, 20:50:48 UTC
Last enriched: 07/15/2026, 13:18:26 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 665
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