cvedb.io
CVE-2026-31072
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-05-19T16:16:20.610 · Last modified 2026-06-30T03:18:23.183

Summary

The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function allows for arbitrary class instantiation and state injection by dynamically importing modules and calling __setstate__ on any class available in the Python environment. An attacker can exploit this by submitting a specially crafted JSON or CBOR payload to an application using these serializers

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.