CVE-2026-3490
picklescan before 1.0.4 fails to block pkgutil.resolve_name, allowing attackers to bypass the entire blocklist by resolving any dangerous function through indirect REDUCE calls. Remote attackers can invoke any blocked function such as os.system, builtins.exec, or subprocess.call to achieve remote code execution.
View on NVDAnalysis
picklescan antes de la versión 1.0.4 permite a atacantes saltar los filtros de seguridad y lograr ejecución remota de código (RCE) mediante la resolución indirecta de nombres. Este fallo crítico permite invocar funciones como os.system o exec para comprometer el servidor al procesar archivos maliciosos. Es especialmente relevante para equipos que trabajan con modelos de IA o datos serializados en entornos Python.
Relevant roles
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HCWE-183EPSS
No EPSS score yet (CVE may be too fresh).
Technical description
picklescan before 1.0.4 fails to block pkgutil.resolve_name, allowing attackers to bypass the entire blocklist by resolving any dangerous function through indirect REDUCE calls. Remote attackers can invoke any blocked function such as os.system, builtins.exec, or subprocess.call to achieve remote code execution.