CVE-2025-55013 – Assemblyline 4 Service Client Path Traversal Vulnerability

CVE ID : CVE-2025-55013

Published : Aug. 9, 2025, 3:15 a.m. | 16 minutes ago

Description : The Assemblyline 4 Service Client interfaces with the API to fetch tasks and publish the result for a service in Assemblyline 4. In versions below 4.6.1.dev138, the Assemblyline 4 Service Client (task_handler.py) accepts a SHA-256 value returned by the service server and uses it directly as a local file name.A malicious or compromised server (or any MITM that can speak to client) can return a path-traversal payload such as `../../../etc/cron.d/evil` and force the client to write the downloaded bytes to an arbitrary location on disk. This is fixed in version 4.6.1.dev138.

Severity: 10.0 | CRITICAL

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