Vulnerability in Open-Telemetry Opentelemetry-Go
CVE-2026-39883
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (9.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
Affected products
- Open-Telemetry Opentelemetry-Go — versions >= 1.15.0, < 1.43.0
- Opentelemetry
Weakness classification (CWE)
References
- github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-hfvc-g4fc-p… (Exploit, Third Party Advisory)
- github.com/open-telemetry/opentelemetry-go/releases/tag/v1.43.0 (Release Notes)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-39883?
- CVE-2026-39883 is a high-severity vulnerability in Open-Telemetry Opentelemetry-Go, classified under Untrusted Search Path. CVSS score: 7.0/10. Published 2026-04-08.
- How severe is CVE-2026-39883?
- High severity. CVSS v3 base score is 7.0 out of 10.