CVE-2026-45360

HIGH EPSS 46.6%
Published Jun 1, 20261mo ago · Modified Jun 17, 20262w ago
7.3 CVSS 3.1
High
Find Similar
Published Jun 1, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

Apache Airflow's scheduler-side deadline-reference decoder (`SerializedCustomReference.deserialize_reference`) imported and dispatched arbitrary class paths drawn from DAG-author-controlled serialized state without an allowlist or plugin-registry gate. A DAG author whose code reaches the scheduler — the default on single-host deployments where the DAG bundle is importable from the scheduler process — could embed a custom `DeadlineReference` whose serialized form named an attacker-controlled module path, causing the scheduler to `import_string(...)` and instantiate that class with a live SQLAlchemy session attached. Affects deployments where DAG-author code is less trusted than the scheduler process. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.

CVSS Details

Base Score
7.3
Exploitability
3.9
Impact
3.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
46.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-502 Deserialization of Untrusted Data Validation

Affected Products 1

VendorProductVersionRange
apacheairflow* <3.2.2

References 3

  • openwall.com http://www.openwall.com/lists/oss-security/2026/05/31/12
    Mailing ListThird Party Advisory
  • github.com https://github.com/apache/airflow/pull/66737
    Issue TrackingPatch
  • lists.apache.org https://lists.apache.org/thread/q227dghjwgfz8xsxrf2pwpz4wk43zm83
    Mailing ListVendor Advisory

Remediation

  • github.com https://github.com/apache/airflow/pull/66737
    Issue TrackingPatch