CVE-2026-39883
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.3 HIGHCVSS: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/M
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-426
- Affected
- opentelemetry/opentelemetry
- Source
- security-advisories@github.com
References
- http://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.43.0Release Notes
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-hfvc-g4fc-pqhxExploit, Third 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.