Microsoft APM — Vulnerability (CVE-2026-44641)
Date: 2026-05
Attack vector: path-traversal
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-44641
CWE: CWE-22
CWE-73
CVSS: 7.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N)

Microsoft APM is an open-source, community-driven dependency manager for AI agents. Prior to 0.8.12, Microsoft APM normalizes marketplace plugins by copying plugin components referenced in plugin.json into .apm/. The manifest fields agents, skills, commands, and hooks are attacker-controlled, but the implementation does not enforce that those paths remain inside the plugin directory. A malicious plugin can therefore use absolute paths or ../ traversal paths to copy arbitrary readable host files or directories from the installer's machine during apm install. This vulnerability is fixed in 0.8.12.


Mitigations:

Architectural layers (MAESTRO):