EUVD-2026-30559
GHSA-mq5j-pw29-jcv3
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Lifecycle Timeline
2DescriptionNVD
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.
AnalysisAI
Archive extraction boundary failure in Microsoft APM's legacy-bundle probe allows local attackers to overwrite arbitrary files on Windows systems running Python 3.10 or 3.11. When users run 'apm install' on a malicious .tar.gz file, untrusted tar members bypass path validation, enabling absolute path writes (e.g., D:/...) that compromise system integrity. …
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