PatchTheCVECVE-2026-45360: Apache Airflow's scheduler-side deadline-reference decoder (`SerializedCustomReference.deserialize_reference`)
CVE-2026-45360 is a high-severity flaw (CVSS 7.3) affecting airflow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.3 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 48%) |
| CISA exploited list | No |
| Weakness | CWE-502 |
| Published | 2026-06-01 |
| Last modified | 2026-07-21 |
Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-45360?
airflow: upgrade to 3.2.2. Exact commands for each OS are on this page.
Is CVE-2026-45360 being exploited?
CVE-2026-45360 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-45360 affect?
CVE-2026-45360 affects airflow. Severity is high (CVSS 7.3). 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-re
How urgent is CVE-2026-45360?
Priority 49/100. High severity; Remotely exploitable, no login, no user action; On your watchlist
Software pages
Apache Airflow vulnerabilities
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