PT-2026-41317 · Microsoft · Apm

CVE-2026-46383 · Published 2026-05-15 · Updated 2026-07-13

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Microsoft APM versions prior to 0.13.0

Description Microsoft APM contains a Windows-specific archive extraction boundary failure affecting users on Python 3.10 and 3.11 runtimes. When the apm install <bundle> command is provided with a local .tar.gz file that is not recognized as a plugin-format bundle, the software uses a legacy-bundle probe to determine if it is a legacy --format apm bundle. On affected Python versions, the looks like legacy apm bundle() function extracts untrusted tar members using tar.extractall() without rejecting Windows absolute member names (e.g., D:/...). This allows a crafted archive to create or overwrite arbitrary files outside the temporary extraction root with the privileges of the user running the software, even if the bundle is ultimately rejected. Real-world demonstrations include the overwrite of project GitHub Actions workflow files. A similar issue also exists in the deprecated apm unpack command.

Recommendations Update to version 0.13.0.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

CWE-73

Related Identifiers

CVE-2026-46383

GHSA-MQ5J-PW29-JCV3

PYSEC-2026-2378

Affected Products

Apm

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46383.json · Exploit
• 🔥 https://github.com/microsoft/apm/security/advisories/GHSA-mq5j-pw29-jcv3 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-46383 · Security Note
• https://osv.dev/vulnerability/PYSEC-2026-2378 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-mq5j-pw29-jcv3 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-46383 · Vendor Advisory
• https://github.com/microsoft/apm/commit/77d1dda8303c8d7ccb6148788a6274fdece98499 · Note
• https://github.com/microsoft/apm/releases/tag/v0.13.0 · Note
• https://github.com/microsoft/apm · Note
• https://twitter.com/f1tym1/status/2055509621696037213 · Twitter Post
• https://github.com/advisories/GHSA-mq5j-pw29-jcv3 · Note
• https://t.me/CVEtracker/53930 · Telegram Post
• https://pypi.org/project/apm-cli · Note