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Low

Exploitation requires the attacker to already be an authenticated Airflow worker holding a valid Log-server JWT issued for at least one Dag. Apache Airflow's Log server authorized JWT tokens against D

  • Disclosed: 01.06.2026
  • Updated: 11.10.2026 14:18

Exploitation requires the attacker to already be an authenticated Airflow worker holding a valid Log-server JWT issued for at least one Dag. Apache Airflow's Log server authorized JWT tokens against Dag IDs by applying Python's str.lstrip() to the requested path segment when verifying the JWT's sub claim. str.lstrip() strips any of a set of characters from the left (not a prefix), so a JWT issued for a Dag named e.g. dag_a would authorize log access to any other Dag whose name began with any subset of the characters {d, a, g, _} (e.g. dag_attacker, aaaa_target, _dag_secret). Such an authenticated worker could enumerate and read worker logs of other Dags whose names happened to share that character-class prefix, leaking task output and error traces beyond the documented per-Dag isolation boundary. Affects deployments relying on per-Dag log-access scoping (multi-team, shared-executor, shared-worker topologies). Users are advised to upgrade to apache-airflow 3.2.2 or later.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) apache-airflow >= 3.0.0, < 3.2.2 3.2.2

References

CVSS score 3.1/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE)
CWE-863
Platform
Python (PyPI)
Package
apache-airflow
Disclosed
01.06.2026
Updated
11.10.2026 14:18

Sources and licenses

OSV / GitHub Advisory Database - GHSA-x5wm-j6wh-2834 - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2026-174 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: apache-airflow

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (158) in the archive
Total entries
158
First → latest
08.2018 09.2026
Without a fix
4
Exploited in attacks
2

Severity breakdown

  • Critical 16
  • High 49
  • Medium 86
  • Low 7

Disclosures per year

Severity:
  1. Apache Airflow: the Core API logout endpoint revokes only a session token presented as the _token cookie. When a client logs out presenting its credential as an Authorization bearer header instead, th
    Critical · 9.1 CVE-2026-86473 >= 3.0.0, < 3.3.2 3.3.2
  2. 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()`
    High · 7.5 CVE-2026-68968 < 3.3.1 3.3.1
  3. 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 a
    High · 8.8 CVE-2026-67587 >= 3.3.0, < 3.3.1 3.3.1
  4. 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
    High · 7.3 CVE-2026-67260 >= 3.3.0, < 3.3.1 3.3.1
  5. Apache Airflow's serialization layer reconstructed exception nodes by calling `import_string()` on a class name taken from the serialized blob and instantiating it with arguments from the same blob, w
    High · 8.8 CVE-2026-58076 >= 3.3.0, < 3.3.1 3.3.1
  6. A bug in `BaseSerialization.deserialize()` allowed unrestricted `import_string()` of attacker-controlled class paths when the Scheduler / API Server loaded a serialized DAG: a DAG author could embed a
    Critical · 9.8 CVE-2026-33264 < 3.3.0 3.3.0
  7. Exploitation requires the attacker to already be an authenticated Airflow worker holding a valid Log-server JWT issued for at least one Dag. Apache Airflow's Log server authorized JWT tokens against D this entry
    Low · 3.1 CVE-2026-45426 >= 3.0.0, < 3.2.2 3.2.2
  8. A bug in Apache Airflow's XCom PATCH endpoint `PATCH /api/v2/xcomEntries/{key}` allowed an authenticated UI/API user with XCom write permission on a Dag to set XCom entries under reserved key names (e
    High · 8.8 CVE-2026-42359 >= 3.2.0, < 3.2.2 3.2.2
  9. A bug in Apache Airflow's bulk Task Instances API (`PATCH/DELETE /api/v2/dags/{dag_id}/dagRuns/{dag_run_id}/taskInstances`) evaluated authorization against the `dag_id` resolved from the URL path whil
    High · 7.5 CVE-2026-41084 >= 3.2.0, < 3.2.2 3.2.2
  10. Apache Airflow's official documentation at `core-concepts/dag-run.html` ("Passing Parameters when triggering Dags") showed a verbatim `BashOperator(bash_command="echo value: {{ dag_run.conf['conf1'] }
    Critical · 9.1 CVE-2026-42252 >= 3.0.0, < 3.2.2 3.2.2
  11. Apache Airflow: Authenticated users can bypass the `is_safe_url` check
    High · 7.2 CVE-2026-40961 < 3.2.2 3.2.2
  12. Apache Airflow Vulnerable to Deserialization of Untrusted Data
    High · 7.3 CVE-2026-45360 >= 3.2.0, < 3.2.2 3.2.2
  13. Apache Airflow allows code execution through crafted XCom payloads
    High · 7.2 CVE-2026-25917 < 3.2.0 3.2.0
  14. Apache Airflow: JWT token appearing in logs
    High · 7.5 CVE-2026-31987 >= 3.0.0, < 3.2.0 3.2.0
  15. Apache Airflow: RCE by race condition in example_xcom dag
    High · 8.1 CVE-2025-54550 < 3.2.0 3.2.0
  16. Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly tru
    High · 8.8 CVE-2026-33858 >= 3.1.8, < 3.2.0 3.2.0
  17. Apache Airflow: JWT token still valid after logout
    Critical · 9.1 CVE-2025-57735 >= 3.0.0, < 3.2.0 3.2.0
  18. Apache Airflow versions 3.1.0 through 3.1.7 missing authorization vulnerability in the Execution API's Human-in-the-Loop (HITL) endpoints that allows any authenticated task instance to read, approve,
    High · 8.1 CVE-2026-30911 >= 3.1.0, < 3.1.8 3.1.8
  19. Apache Airflow versions 3.1.0 through 3.1.7 session token (_token) in cookies is set to path=/ regardless of the configured [webserver] base_url or [api] base_url.
    High · 7.5 CVE-2026-28779 >= 3.0.0, < 3.1.8 3.1.8
  20. Apache Airflow vulnerable to Code Injection in the web-server context via LogTemplate table
    High · 8.4 CVE-2024-56373 < 2.11.1 2.11.1
Show more (20) Showing 20 of 66

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