Is apm affected by CVE-2026-45539?

PyPI apm is affected in >=0.5.4 <0.13.0.

Is CVE-2026-45539 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.7%.

high

CVE-2026-45539

Q: Is CVE-2026-45539 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.7%.

PyPI · apm

Summary

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

Severity: high
EPSS: 0.7% (p46)
Also known as: GHSA-q5pp-gvjg-h7v4
Published: 2026-05-18

References

https://github.com/microsoft/apm/security/advisories/GHSA-q5pp-gvjg-h7v4
https://nvd.nist.gov/vuln/detail/CVE-2026-45539
https://github.com/microsoft/apm/commit/f85b9f54ad303159f9c448268eb7005c319fe02a

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.