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

Quick assessment

Affected
microsoft apm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

APM – Agent Package Manager是Microsoft开源的一款AI代理依赖管理工具。 APM – Agent Package Manager 0.8.12之前版本存在路径遍历漏洞，该漏洞源于未验证插件路径是否在插件目录内，可能导致恶意插件在安装过程中复制主机上的任意可读文件或目录。

CVSS 7.1 · High EPSS 0.53% · P43

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
microsoft apm < 0.8.12 affected
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I. Basic Information for CVE-2026-44641

Vulnerability Information
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Vulnerability Title
Microsoft APM: plugin.json component paths escape plugin root and copy arbitrary host files during install
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
APM – Agent Package Manager 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
APM – Agent Package Manager是Microsoft开源的一款AI代理依赖管理工具。 APM – Agent Package Manager 0.8.12之前版本存在路径遍历漏洞，该漏洞源于未验证插件路径是否在插件目录内，可能导致恶意插件在安装过程中复制主机上的任意可读文件或目录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
microsoft apm < 0.8.12 -

II. Public POCs for CVE-2026-44641

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III. Intelligence Information for CVE-2026-44641

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Vendor Advisories for CVE-2026-44641 (1)

Same Patch Batch · microsoft · 2026-05-15 · 3 CVEs total

CVE-2026-45539 7.4 HIGH Microsoft APM: Symlinks under `.apm/prompts/` and `.apm/agents/` are dereferenced during `
CVE-2026-46383 5.5 MEDIUM Microsoft APM: Windows absolute-path tar member overwrite during legacy-bundle probing in

IV. Related Vulnerabilities

Same product: apm
Same vendor: microsoft
Same weakness: CWE-22

V. Comments for CVE-2026-44641

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