Apache AirflowGHSA-f643-3rc2-j27w
Apache Airflow exposes dict-valued var.json secrets in Rendered Templates
Medium6.5CVE-2026-59244 · Published Aug 12, 2026 · updated Oct 2, 2026
Apache Airflow's secrets masker did not mask `var.json` Variable values whose value is a dict in the Rendered Templates UI , the dict value failed an `isinstance(str)` guard , so a secret stored as a JSON Variable and referenced in a template via `var.json` was displayed in cleartext to any user with access to that task's Rendered Templates view. Users are advised to upgrade to apache-airflow 3.3.1 or later, which masks nested Variable values regardless of type.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| apache-airflow PyPI | < 3.3.1 | 3.3.1 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-312
- Also known as
- BIT-airflow-2026-59244, CVE-2026-59244, PYSEC-2026-3706
- nvd.nist.gov/vuln/detail/CVE-2026-59244
- github.com/apache/airflow/pull/68975
- github.com/apache/airflow/commit/917a086be848943aaaaa577b927e381f2dc1e99f
- github.com/apache/airflow/commit/aee182636d0b10a95d94400f7d8b3228dc2c802f
- github.com/apache/airflow/commit/b23955afc5c74386a092a1be5bcd376751c3c8a9
- github.com/apache/airflow
- github.com/apache/airflow/releases/tag/3.3.1
- github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-3706.yaml
- lists.apache.org/thread/fncod6vttfo5fvmfs3h9r8s2kmm9j1n6
- www.openwall.com/lists/oss-security/2026/08/12/7
More Apache Airflow advisories
All Apache Airflow| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 12 | Apache Airflow missing team context permits cross-team Dag actions and XCom reads Medium6.5Aug 12 | Medium6.5 | 3.3.1 |
| Aug 12 | Apache Airflow bulk endpoints log Variable and Connection secrets in cleartextMedium6.5Aug 12 | Medium6.5 | 3.3.1 |
| Aug 12 | Apache Airflow Task SDK fails to mask list-shaped JSON VariablesMedium6.5Aug 12 | Medium6.5 | 3.3.1 |
| Aug 12 | Apache Airflow Task SDK Callback deserialization can import arbitrary modules in the schedulerHigh8.8Aug 12 | High8.8 | 3.3.1 |
| Aug 12 | Apache Airflow environment-variable secrets backend permits cross-team credential useMedium5.4Aug 12 | Medium5.4 | 3.3.1 |
| Aug 12 | Apache Airflow Config API exposes team-scoped sensitive configuration valuesMedium6.5Aug 12 | Medium6.5 | 3.3.1 |