CVE-2026-44641

Microsoft APM: plugin.json component paths escape plugin root and copy arbitrary host files during install

State: Published
Severity: 7.1 High
Published: May 15, 2026
Updated: May 15, 2026
Reserved: May 7, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73 External Control of File Name or Path

Affected Products

Product	Versions
apmmicrosoft	< 0.8.12Affected

References

https://github.com/microsoft/apm/security/advisories/GHSA-xhrw-5qxx-jpwr

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