CVE-2026-31072 The advisory has been revoked - it doesn't affect any version of package apscheduler (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-APSCHEDULER-16780508
- published21 May 2026
- disclosed19 May 2026
Introduced: 19 May 2026
CVE-2026-31072 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:12.
NVD Description
Note: Versions mentioned in the description apply only to the upstream apscheduler package and not the apscheduler package as distributed by Debian.
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
References
- https://security-tracker.debian.org/tracker/CVE-2026-31072
- https://github.com/agronholm/apscheduler
- https://access.redhat.com/security/cve/CVE-2026-31072
- https://bugzilla.redhat.com/show_bug.cgi?id=2479907
- https://gist.github.com/nedlir/11fb77f35a59cbba73392a086b02a9c6
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31072.json