What is CVE-2026-67587?

CVE-2026-67587 is a high-severity vulnerability in Apache Software Foundation Airflow, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-08-12.

How severe is CVE-2026-67587?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Apache Software Foundation Airflow

CVE-2026-67587

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 `…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apache Software Foundation Airflow — versions 3.3.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@apache.org (patch)
security@apache.org (related)
security@apache.org (related)
security@apache.org (vendor-advisory)

Frequently asked questions

What is CVE-2026-67587?: CVE-2026-67587 is a high-severity vulnerability in Apache Software Foundation Airflow, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-08-12.
How severe is CVE-2026-67587?: High severity. CVSS v3 base score is 8.8 out of 10.