Information disclosure in Apache Airflow
CVE-2025-68438
In Apache Airflow versions before 3.1.6, when rendered template fields in a Dag exceed [core] max_templated_field_length, sensitive values could be exposed in cleartext in the Rendered Templates UI. This occurred because serialization of those fields used a secrets masker instance that did not include user-registered mask_secret() patterns, so secrets were not reliably masked before truncation and display. Users are recommended to upgrade to 3.1.6 or later, which fixes this issue
Vulnerability class: Information Disclosure
Published · last modified .
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: 0.007 (49.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions 3.1.0
Weakness classification (CWE)
References
- lists.apache.org/thread/55n7b4nlsz3vo5n4h5lrj9bfsk8ctyff (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-68438?
- CVE-2025-68438 is a high-severity vulnerability in Apache Airflow, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-01-16.
- How severe is CVE-2025-68438?
- High severity. CVSS v3 base score is 7.5 out of 10.