CVE-2026-39883

Estado: ModificadaAlta (7.3)—
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

Versión: 4.0
Vector: 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:X/V:X/RE:X/U:X
Puntuación base: 7.3
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 10
Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1574.007 Path Interception by PATH Environment Variablestealth · execution80 %
Impacto secundarioT1059 Command and Scripting Interpreterexecution75 %
Acceso local con PR:L permite PATH hijacking en kenv (BSD/Solaris), escalando privilegios (VC:H). La inyección de DLL/biblioteca vía manipulación de PATH (T1574.007) resulta en ejecución de código arbitrario.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution Prevention Audit Threat Intelligence Program Restrict Web-Based Content Restrict File and Directory Permissions Privileged Account Management
Tecnologías afectadas (1)

Opentelemetry — Opentelemetry
CWE

CWE-426
CWE-426
Referencias

JSON original (NVD)

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