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Echo: apache-airflow: security update to 3.3.0

critical Tenable Self-Hosted Container Security Plugin ID 464014

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A bug in `BaseSerialization.deserialize()` allowed unrestricted `import_string()` 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] allowed_deserialization_classes` config to a narrow allowlist.
 (CVE-2026-33264)

Solution

Update the apache-airflow library and its related packages to version 3.3.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-33264

Plugin Details

Severity: Critical

ID: 464014

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.08

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-33264

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/6/2026

Vulnerability Publication Date: 7/7/2026

Reference Information

CVE: CVE-2026-33264