What is CVE-2018-20244?

CVE-2018-20244 is a medium-severity vulnerability in Apache Airflow, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2019-02-27.

How severe is CVE-2018-20244?

Medium severity. CVSS v3 base score is 5.5 out of 10.

XSS in Apache Airflow

CVE-2018-20244

In Apache Airflow before 1.10.2, a malicious admin user could edit the state of objects in the Airflow metadata database to execute arbitrary javascript on certain page views.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.020 (79.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions Apache Airflow <= 1.10.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

lists.apache.org/thread.html/f656fddf9c49293b3ec450437c46709eb01a12d1645136b2f1…
lists.apache.org/thread.html/2de387213d45bc626d27554a1bde7b8c67d08720901f82a50b… (mailing-list)
www.openwall.com/lists/oss-security/2019/04/10/6 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20244?: CVE-2018-20244 is a medium-severity vulnerability in Apache Airflow, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2019-02-27.
How severe is CVE-2018-20244?: Medium severity. CVSS v3 base score is 5.5 out of 10.