Severity: low 

Affected versions:

- Apache Airflow (apache-airflow) 3.1.0 before 3.1.6

Description:

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

Credit:

William Ashe (finder)
Amogh Desai (remediation developer)

References:

https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2025-68438

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