CVE•Published 2026-05-19•Modified 2026-05-20•1 article on news•6 live references•NVD data
CVE-2026-31072
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
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
Timeline
Published 2026-05-19
Modified 2026-05-20
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-31072Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-31072Censys host search filtered to this CVE id.
grep.app
CVE-2026-31072Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-31072GitHub code search for direct mentions.
Google dork
"CVE-2026-31072" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-31072 on GitHub.