Apache AirflowPYSEC-2026-3712

Apache Airflow's Task SDK did not mask the contents of a Variable whose JSON value is a list, so secrets stored in that shape appeared in cleartext in task logs and in the Rendered Templates UI. Masking was applied only when the deserialized value was a string or a dict; a list at the top level matc

Medium6.5CVE-2026-68970 · Published Aug 12, 2026 · updated Aug 19, 2026

Affected versions

Package	Affected	Fixed in
apache-airflow PyPI	< 3.3.1	3.3.1

Details and references

Apache Airflow's Task SDK did not mask the contents of a Variable whose JSON value is a list, so secrets stored in that shape appeared in cleartext in task logs and in the Rendered Templates UI. Masking was applied only when the deserialized value was a string or a dict; a list at the top level matched neither and was returned unmasked. Any authenticated user able to read the logs or rendered templates of a task that references such a Variable could recover the values, with no special configuration required. This is the list-shaped counterpart of CVE-2026-59244, whose fix covered the dict case only, so deployments that upgraded in response to that advisory remain affected and must upgrade again. Users are advised to upgrade to apache-airflow 3.3.1 or later.

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Severity from: the CVSS score
Also known as: BIT-airflow-2026-68970, CVE-2026-68970

More Apache Airflow advisories

All Apache Airflow

Date	Advisory	Severity	Fixed in
Aug 12	Apache Airflow's secrets masker hides values stored under sensitive key names when they are displayed in the UI. The masker's recursion-depth limit did not descend into values nested inside a list, tuple, or set beyond that limit, so an Airflow Variable holding such a deeply-nested value was shown u CVE-2026-54183Medium4.3fixed in 3.3.1	Medium4.3	3.3.1
Aug 12	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 wit CVE-2026-59244Medium6.5fixed in 3.3.1	Medium6.5	3.3.1
Aug 12	Apache Airflow 3.3.0 moved human-in-the-loop tasks from the triggerer to a new `awaiting_input` task state swept by the scheduler. That sweep deserializes the task instance's `next_kwargs` without an allow-list, so a Dag author , who controls that value through the task execution API , can cause an CVE-2026-67260High7.3fixed in 3.3.1	High7.3	3.3.1
Aug 12	Apache Airflow's Task SDK rebuilt a `Callback` object from serialized data by re-running its constructor, which imports the module named by the stored callback path. Because `SyncCallback` is itself an Airflow class it passes the default `allowed_deserialization_classes` allow-list, so tightening th CVE-2026-67587High8.8fixed in 3.3.1	High8.8	3.3.1
Aug 12	Apache Airflow's environment-variable secrets backend resolved a team-scoped Connection or Variable from the wrong team's scope. The guard meant to prevent this only ran when no team scope was supplied, and its pattern could not match a team name containing an underscore, which team names are allowe CVE-2026-68076Medium5.4fixed in 3.3.1	Medium5.4	3.3.1
Aug 12	Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the `backfill_id` path segment failed to parse. The authorization dependency parsed it with `int()` while the route handler parsed it as pydantic's `NonNegativeInt`, which accepts values `int()` rejec CVE-2026-68968High7.5fixed in 3.3.1	High7.5	3.3.1

Affected versions

More Apache Airflow advisories

Critical advisories by email