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CVE-2026-39883: CWE-426: Untrusted Search Path in open-telemetry opentelemetry-go

0
High
VulnerabilityCVE-2026-39883cvecve-2026-39883cwe-426gcve
Published: 04/08/2026 (04/08/2026, 20:26:41 UTC)
Source: CVE Database V5
Vendor/Project: open-telemetry
Product: 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

Attack Vector
Local
Attack Complexity
High
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected software

open-telemetry

opentelemetry-go

Affected versions
>=1.15.0 <1.43.0
github.com/open-telemetry/opentelemetry-go
pkg:golang/github.com/open-telemetry/opentelemetry-go
Affected versions
>=1.15.0 <1.43.0

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/12/2026, 13:03:06 UTC

Technical Analysis

OpenTelemetry-Go versions >=1.15.0 and <1.43.0 contain an untrusted search path vulnerability (CWE-426) related to the use of the kenv command on BSD and Solaris platforms. While the Darwin ioreg command was fixed in a prior CVE, the kenv command remained vulnerable due to being called without an absolute path. This allows a local attacker to hijack the PATH environment variable and achieve arbitrary code execution or privilege escalation. The vulnerability affects system integrity and confidentiality. The issue is fixed in version 1.43.0. Red Hat advisory confirms the vulnerability and notes it does not directly affect RHEL but may impact layered products that include the vulnerable component.

Potential Impact

A local attacker on BSD or Solaris systems can exploit this vulnerability by manipulating the PATH environment variable to execute arbitrary code or escalate privileges. This compromises system integrity, confidentiality, and availability. The vulnerability does not affect Red Hat Enterprise Linux directly but may affect Red Hat products that bundle the vulnerable OpenTelemetry-Go component. No active exploits have been reported.

Mitigation Recommendations

A fix is available in open-telemetry opentelemetry-go version 1.43.0. Users should upgrade to this version or later to remediate the vulnerability. For affected Red Hat products that include this component, monitor vendor advisories for patches or updates. No alternative mitigations are specified by the vendor advisory.

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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
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: 08/12/2026, 13:03:06 UTC

Last updated: 09/14/2026, 22:11:29 UTC

Views: 702

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