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Vulnerability · Published Apr 8, 2026 · Assigned by GitHub_M

CVE-2026-39883OpenTelemetry-Go has an incomplete fix for CVE-2026-24051: BSD kenv command not using absolute path enables PATH hijacking

High 7.0

In plain English

A high-severity security flaw in opentelemetry-go from open-telemetry. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.3%top 81.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogo.opentelemetry.io/otel/sdk1.43.0GO-2026-5426
Gogo.opentelemetry.io/otel/sdk1.43.0GHSA-hfvc-g4fc-pqhx
Ubuntu:22.04:LTSgolang-opentelemetry-otelno fix listedUBUNTU-CVE-2026-39883
Ubuntu:24.04:LTSgolang-opentelemetry-otelno fix listedUBUNTU-CVE-2026-39883
Ubuntu:25.10golang-opentelemetry-otelno fix listedUBUNTU-CVE-2026-39883
Ubuntu:26.04:LTSgolang-opentelemetry-otelno fix listedUBUNTU-CVE-2026-39883
Ubuntu:26.10golang-opentelemetry-otelno fix listedUBUNTU-CVE-2026-39883

Affected products (as reported)

VendorProductVersions
open-telemetry opentelemetry-go >= 1.15.0, < 1.43.0

Weakness: CWE-426 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References