What is CVE-2022-40604?

CVE-2022-40604 is a high-severity vulnerability in Apache Airflow, classified under Use of Externally-Controlled Format String. CVSS score: 7.5/10. Published 2022-09-21.

How severe is CVE-2022-40604?

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

Is CVE-2022-40604 known to be exploited?

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

Vulnerability in Apache Airflow

CVE-2022-40604

In Apache Airflow 2.3.0 through 2.3.4, part of a url was unnecessarily formatted, allowing for possible information extraction.

Published 2022-09-21 · 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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.021 (80.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.021 · change: +0.003

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions unspecified, 2.3.0

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

Public proof-of-concept exploits

tanjiti/sec_

References

github.com/apache/airflow/pull/26337 (Patch, Third Party Advisory)
lists.apache.org/thread/z20x8m16fnhxdkoollv53w1ybsts687t (Vendor Advisory)

Frequently asked questions

What is CVE-2022-40604?: CVE-2022-40604 is a high-severity vulnerability in Apache Airflow, classified under Use of Externally-Controlled Format String. CVSS score: 7.5/10. Published 2022-09-21.
How severe is CVE-2022-40604?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-40604 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.