What’s Vulnerable › Vulnerabilities

CVE-2026-44641: Microsoft APM: plugin.json component paths escape plugin root and copy arbitrary host files during install

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-15 · updated 2026-10-26
• Weakness: CWE-22

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.

Affected products

• microsoft apm: before 0.8.12

References

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

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