What is CVE-2023-40195?

CVE-2023-40195 is a high-severity vulnerability in Apache Airflow Spark Provider, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2023-08-28.

How severe is CVE-2023-40195?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-40195 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Apache Airflow Spark Provider

CVE-2023-40195

Deserialization of Untrusted Data, Inclusion of Functionality from Untrusted Control Sphere vulnerability in Apache Software Foundation Apache Airflow Spark Provider. When the Apache Spark provider is installed on an Airflow deployment, an Airflow user that is authorized to configure Spark hooks can effectively run arbitrary code on the Airflow node by pointing it at a malicious Spark server. Prior to version 4.1.3, this was not called out in the documentation explicitly, so it is possible that administrators provided authorizations to configure Spark hooks without taking this into account. We recommend administrators to review their configurations to make sure the authorization to configure Spark hooks is only provided to fully trusted users. To view the warning in the docs please visit https://airflow.apache.org/docs/apache-airflow-providers-apache-spark/4.1.3/connections/spark.html

Vulnerability class: Insecure Deserialization

Published 2023-08-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Apache Airflow Spark Provider
Apache Software Foundation Airflow Spark Provider — versions 0

Weakness classification (CWE)

Public proof-of-concept exploits

References

github.com/apache/airflow/pull/33233 (Patch, patch)
lists.apache.org/thread/fzy95b1d6zv31j5wrx3znhzcscck2o24 (vendor-advisory, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2023-40195?: CVE-2023-40195 is a high-severity vulnerability in Apache Airflow Spark Provider, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2023-08-28.
How severe is CVE-2023-40195?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-40195 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.