What is CVE-2023-50943?

CVE-2023-50943 is a high-severity vulnerability in Apache Airflow, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2024-01-24.

How severe is CVE-2023-50943?

High severity. CVSS v3 base score is 7.5 out of 10.

Deserialization in Apache Airflow

CVE-2023-50943

Apache Airflow, versions before 2.8.1, have a vulnerability that allows a potential attacker to poison the XCom data by bypassing the protection of "enable_xcom_pickling=False" configuration setting resulting in poisoned data after XCom deserialization. This vulnerability is considered low since it requires a DAG author to exploit it. Users are recommended to upgrade to version 2.8.1 or later, which fixes this issue.

Vulnerability class: Insecure Deserialization

Published 2024-01-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/apache/airflow/pull/36255 (Third Party Advisory, patch)
lists.apache.org/thread/fx278v0twqzxkcts70tc04cp3f8p56pn (vendor-advisory, Mailing List, Vendor Advisory)
www.openwall.com/lists/oss-security/2024/01/24/4 (Mailing List)

Frequently asked questions

What is CVE-2023-50943?: CVE-2023-50943 is a high-severity vulnerability in Apache Airflow, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2024-01-24.
How severe is CVE-2023-50943?: High severity. CVSS v3 base score is 7.5 out of 10.