What is CVE-2026-46383?

CVE-2026-46383 is a medium-severity vulnerability in Microsoft Apm, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-05-15.

How severe is CVE-2026-46383?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Path Traversal in Microsoft Apm

CVE-2026-46383

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 s…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.001 (17.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Microsoft Apm — versions < 0.13.0

Weakness classification (CWE)

CWE-22 — Path Traversal
CWE-73 — External Control of File Name or Path

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-46383?: CVE-2026-46383 is a medium-severity vulnerability in Microsoft Apm, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-05-15.
How severe is CVE-2026-46383?: Medium severity. CVSS v3 base score is 5.5 out of 10.