Is CVE-2026-46383 actively exploited?

No active exploitation of CVE-2026-46383 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-46383 be exploited remotely?

No. CVE-2026-46383 requires local access to exploit.

What is the CVSS score of CVE-2026-46383?

CVE-2026-46383 has a CVSS score of 5.5 (MEDIUM).

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MEDIUM

CVE-2026-46383

CWE-22Published: May 15, 2026· Updated: May 18, 2026

5.5

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:18.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-46383 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.5.