CVE-2026-67587
Airflow deserialization bug lets a DAG author force arbitrary module import in scheduler.
Is CVE-2026-67587 being exploited?
Not confirmed. CVE-2026-67587 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.61% probability of exploitation in the next 30 days.
How severe is CVE-2026-67587?
CVE-2026-67587 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-67587?
Yes. A fix has been recorded for CVE-2026-67587. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-67587 affect?
CVE-2026-67587 affects Apache Airflow Task SDK, Apache Airflow scheduler, Apache Airflow 3.3.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-67587?
Upgrade to apache-airflow 3.3.1+; restrict DAG author privileges and isolate schedulers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A DAG author can cause the scheduler to import arbitrary modules during deserialization, enabling code execution or full scheduler compromise.
Immediate action required
- affected>= 3.3.0 and < 3.3.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.