PT-2026-41945 · Pypi · Apscheduler

Published 2026-05-19 · Updated 2026-05-20 · CVE-2026-31072

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions APScheduler (affected versions not specified)

Description The JSONSerializer and CBORSerializer are subject to Remote Code Execution (RCE) through insecure deserialization. The unmarshal object() function enables arbitrary class instantiation and state injection by dynamically importing modules and calling setstate on any class present in the Python environment. This can be triggered by submitting a specially crafted JSON or CBOR payload to an application utilizing these serializers.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-31072

Affected Products

Apscheduler

References · 9

• 🔥 https://gist.github.com/nedlir/11fb77f35a59cbba73392a086b02a9c6 · Exploit
• https://security-tracker.debian.org/tracker/CVE-2026-31072 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31072 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31072 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31072 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31072 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31072 · Security Note
• https://github.com/agronholm/apscheduler · Note
• https://twitter.com/CVEnew/status/2056994222184841467 · Twitter Post