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Vulnerability record · CVE-2026-39883 · published 8 April 2026

CVE-2026-39883: Opentelemetry untrusted search path vulnerability

Opentelemetry · Opentelemetry

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.

7.3 CVSS 4.0 High EPSS 0.21% · top 90.3% CWE-426 · Untrusted search path
7.3CVSS 4.0 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
11References, 1 tagged exploit
9 Sep 2026Last modified by NVD

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:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.43.0 Release Notes
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-hfvc-g4fc-pqhx ExploitThird Party Advisory
https://access.redhat.com/errata/RHSA-2026:26254
https://access.redhat.com/errata/RHSA-2026:26257
https://access.redhat.com/errata/RHSA-2026:37387
https://access.redhat.com/errata/RHSA-2026:54274
https://access.redhat.com/errata/RHSA-2026:54286
https://access.redhat.com/errata/RHSA-2026:63140
https://access.redhat.com/security/cve/CVE-2026-39883
https://bugzilla.redhat.com/show_bug.cgi?id=2456718
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39883.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2026-29181Opentelemetry allocation without limits vulnerabilityOpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-va…EPSS 0.87%7.5CVE-2023-47108Opentelemetry allocation without limits vulnerabilityOpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. Starting in version 0.37.0 and prior to version 0.46.0, the gr…EPSS 1.6%7.5CVE-2023-45142Opentelemetry allocation without limits vulnerabilityOpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper out of the box adds labels `http.user_agent`…EPSS 1.4%7.5CVE-2023-43810Opentelemetry uncontrolled resource consumption vulnerabilityOpenTelemetry, also known as OTel for short, is a vendor-neutral open-source Observability framework for instrumenting, generating, collecting, and e…EPSS 0.69%7.0CVE-2026-24051Opentelemetry untrusted search path vulnerabilityOpenTelemetry-Go is the Go implementation of OpenTelemetry. The OpenTelemetry Go SDK in version v1.20.0-1.39.0 is vulnerable to Path Hijacking (Untru…EPSS 0.17%5.9CVE-2026-41078Opentelemetry allocation without limits vulnerabilityOpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure wh…EPSS 0.37%5.9CVE-2026-40182Opentelemetry vulnerabilityOpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry to a back-end/collector over gRPC or HTT…EPSS 0.56%5.3CVE-2026-54285Opentelemetry allocation without limits vulnerabilityopentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 2.8.0, W3CBaggagePropagator.extract() in @opentelemetry/core does not enforce size …EPSS 0.40%

Source: NIST National Vulnerability Database (record CVE-2026-39883), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.