Detections
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Echo: apache-airflow: security update to 3.2.2

medium Tenable Cloud Security Plugin ID 460756

Description

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

 - Apache Airflow's EmailOperator and the underlying `airflow.utils.email` helpers established SMTP STARTTLS
 connections without verifying the remote certificate when the deployment used `[email] smtp_starttls=True`
 without `[email] smtp_ssl`. An attacker positioned between the worker and the configured SMTP server
 (network MITM — typical hostile-network attack-surface for environments where the SMTP relay sits outside
 the worker's trust boundary) could present a self-signed certificate, have the worker complete the
 STARTTLS handshake silently, and capture the SMTP AUTH credentials and message contents the worker
 forwarded. This CVE covers the **core apache-airflow side** of the same root cause already covered for the
 SMTP provider by `CVE-2026-41016` (published 2026-04-27, covering `apache-airflow-providers-smtp`). Users
 who already applied the SMTP-provider fix from CVE-2026-41016 should additionally upgrade `apache-airflow`
 to 3.2.2 or later to cover the core-side path through `airflow.utils.email`. Affects deployments
 configured with `smtp_starttls=True` and `smtp_ssl=False` where the SMTP relay is reachable across a less-
 trusted network segment than the worker. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.
 (CVE-2026-49267)

Solution

Update the apache-airflow library and its related packages to version 3.2.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-49267

Plugin Details

Severity: Medium

ID: 460756

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.74

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-49267

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/11/2026

Vulnerability Publication Date: 6/1/2026

Reference Information

CVE: CVE-2026-49267