What is CVE-2026-31987?

CVE-2026-31987 is a high-severity vulnerability in Apache Airflow, classified under Insertion of Sensitive Information into Log File. CVSS score: 7.5/10. Published 2026-04-16.

How severe is CVE-2026-31987?

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

Information disclosure in Apache Airflow

CVE-2026-31987

JWT Tokens used by tasks were exposed in logs. This could allow UI users to act as Dag Authors. Users are advised to upgrade to Airflow version that contains fix. Users are recommended to upgrade to version 3.2.0, which fixes this issue.

Published 2026-04-16 · 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: 0.008 (56.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions 3.0.0

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

github.com/apache/airflow/pull/62964 (Patch, Third Party Advisory, patch, Issue Tracking)
github.com/apache/airflow/issues/62428 (issue-tracking, Issue Tracking)
github.com/apache/airflow/issues/62773 (issue-tracking, Issue Tracking)
lists.apache.org/thread/pvsrtxzwo9xy6xgknmwslv4zrw70kt6g (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-31987?: CVE-2026-31987 is a high-severity vulnerability in Apache Airflow, classified under Insertion of Sensitive Information into Log File. CVSS score: 7.5/10. Published 2026-04-16.
How severe is CVE-2026-31987?: High severity. CVSS v3 base score is 7.5 out of 10.