Is there a public exploit for CVE-2026-33264?

No public exploit for CVE-2026-33264 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-33264?

CVE-2026-33264 scores CVSS 9.8 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 1.65%.

What does CVE-2026-33264 affect?

CVE-2026-33264 affects Apache Software Foundation Apache Airflow.

9.8 Critical

A bug in BaseSerialization.deserialize() allowed unrestricted importstring() of attacker-controlled class paths when the Scheduler / API…

CVE-2026-33264

A bug in BaseSerialization.deserialize() allowed unrestricted importstring() of attacker-controlled class paths when the Scheduler / API Server loaded a serialized DAG: a DAG author could embed a malicious trigger into a DAG to gain remote code execution on the API Server / Scheduler process, crossing the Airflow security boundary that DAG-author code must never execute in those processes. Users are advised to upgrade to apache-airflow 3.3.0 or later. As a defense-in-depth mitigation, deployments where DAG-author trust is limited can restrict the [core] alloweddeserializationclasses config to a narrow allowlist.

Assessment

CVSS: 9.8 (v3.1)
Severity: Critical
EPSS: 1.65% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 7 July 2026
Last updated: 3 November 2026
Affected: Apache Software Foundation · Apache Airflow
Assigner: apache

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

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