Apache Airflow secrets in rendered templates could contain parts of sensitive values when truncated
GHSA-3qmm-r55x-hpxx · BIT-airflow-2025-68438 · CVE-2025-68438 · PYSEC-2026-9
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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
References
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-68438
- PACKAGE https://github.com/apache/airflow
- WEB https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-9.yaml
- WEB https://lists.apache.org/thread/55n7b4nlsz3vo5n4h5lrj9bfsk8ctyff
- WEB http://www.openwall.com/lists/oss-security/2026/01/15/5
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