# apscheduler (PyPI) vulnerabilities

1 known vulnerability (1 critical), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 3.11.3 (Jun 28, 2026): no advisory affects it
- Newest unaffected release: 3.11.3 (Jun 28, 2026), the latest release
- Weekly downloads: 10.8M
- Dependents: 3,031
- Releases: 59 since 1.0.0 (Aug 1, 2009)
- Registry: https://pypi.org/project/apscheduler/
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-31072: 4.0.0a1 to 4.0.0a6 (through the newest release)

## Advisories (1)

### [CVE-2026-31072](https://cve.now/CVE-2026-31072): The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution…

- Severity: Critical 9.8
- Published: May 19, 2026
- Affected: from 4.0.0a1, through 4.0.0a6.
- No fix released.

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