SB20260824159 - Multiple vulnerabilities in Apache Airflow

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Main Vulnerability Database SB20260824159

SB20260824159 - Multiple vulnerabilities in Apache Airflow

Published: August 24, 2026

Security Bulletin ID SB20260824159
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 20% Low 80%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Code Injection (CVE-ID: CVE-2026-33264)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper control of code generation in BaseSerialization.deserialize() when loading a serialized DAG containing an attacker-controlled class path. A remote user can embed a malicious trigger into a DAG to execute arbitrary code.

The issue crosses the Airflow security boundary by allowing DAG-author code to run in the API Server or Scheduler process.


2) Information disclosure (CVE-ID: CVE-2026-49487)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper masking of sensitive information in the task-instance detail and list REST API endpoints when returning deferred task trigger kwargs. A remote user can query the affected API endpoints to disclose sensitive information.

Only deferred tasks are affected, and secrets are exposed in clear text when a deferred operator passes them into its trigger kwargs.


3) Incorrect authorization (CVE-ID: CVE-2026-49296)

CWE-ID: CWE-863 - Incorrect Authorization

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in the GET /api/v2/dagSources/{dag_id} endpoint and equivalent dag-source view when returning source files for dag source requests. A remote user can request the source for an authorized dag id to disclose sensitive information.

Only deployments that co-locate multiple dags in a single source file and rely on per-dag access control for source visibility are affected; single-dag-per-file deployments are not.


4) Information disclosure (CVE-ID: CVE-2026-48891)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in the /ui/dependencies scheduling graph endpoint when handling requests for trigger and sensor dependency entries. A remote user can inspect dependency graph data to disclose sensitive information.

This issue affects deployments that rely on per-Dag read scoping to keep Dag identifiers private across teams.


5) Information disclosure (CVE-ID: CVE-2026-48892)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in the Config API when handling configuration read requests. A remote user can query the Config API to disclose sensitive information.

Only deployments that configure secrets backends via per-key environment overrides are vulnerable.


Remediation

Install update from vendor's website.

References