Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-46383— Microsoft APM: Windows absolute-path tar member overwrite during legacy-bundle probing in `apm install`

CVSS 5.5 · Medium EPSS 0.06% · P19

Affected Version Matrix 1

VendorProductVersion RangeStatus
microsoftapm< 0.13.0affected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-46383

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Microsoft APM: Windows absolute-path tar member overwrite during legacy-bundle probing in `apm install`
Source: NVD (National Vulnerability Database)
Vulnerability Description
Microsoft APM is an open-source, community-driven dependency manager for AI agents. Prior to 0.13.0, Microsoft APM contains a Windows-specific archive extraction boundary failure in the legacy-bundle probe used by apm install <bundle> on supported Python 3.10 and 3.11 runtimes. When apm install is given a local .tar.gz that is not recognized as a plugin-format bundle, APM probes whether it is a legacy --format apm bundle. On Python versions earlier than 3.12, that probe extracts untrusted tar members with raw tar.extractall() without rejecting Windows absolute member names such as D:/.... This vulnerability is fixed in 0.13.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
microsoftapm < 0.13.0 -

II. Public POCs for CVE-2026-46383

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-46383

请登录查看更多情报信息。

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

CVE-2026-455397.4 HIGHMicrosoft APM: Symlinks under `.apm/prompts/` and `.apm/agents/` are dereferenced during `
CVE-2026-446417.1 HIGHMicrosoft APM: plugin.json component paths escape plugin root and copy arbitrary host file

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-46383

No comments yet

Leave a comment