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CVE-2026-45539

CVE-2026-45539 · Microsoft APM: Symlinks under `.apm/prompts/` and `.apm/agents/` are dereferenced during `apm install`, copying host-local file contents into the project tree

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Microsoft APM is an open-source, community-driven dependency manager for AI agents. From 0.5.4 to 0.12.4, two primitive integrators in apm-cli enumerate package files with bare Path.glob() / Path.rglob() calls and read each match with Path.read_text(), transparently following symbolic links. A symlink committed inside a remote APM dependency under .apm/prompts/<x>.prompt.md or .apm/agents/<x>.agent.md is preserved verbatim into apm_modules/ on clone and then dereferenced during integration, with the resolved content written as a regular file into the project's deploy directories. The package content_hash, the pre-deploy SecurityGate scan, and apm audit do not flag this. The deploy roots are not added to the auto-generated .gitignore, so the resulting files are staged by git add by default. This vulnerability is fixed in 0.13.0.

CVSS 7.4 · Hoch · EPSS 0,7% · Korrektur verfügbar

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Aktualisiert

Technologie-Stack: python

Betroffene Produkte und Versionen

  • apm

    Softwareversionen
    • >= 0.5.4, < 0.13.0: Betroffen

    Keine Korrektur veröffentlicht

  • apm PyPI

    Betroffene Versionsbereiche
    • ECOSYSTEM: ≥ 0.5.4, < 0.13.0

    Auf 0.13.0 aktualisieren

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