CVE-2026-33858— Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API
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I. Basic Information for CVE-2026-33858
Vulnerability Information
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Vulnerability Title
Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API
Source: NVD (National Vulnerability Database)
Vulnerability Description
Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low. Users are recommended to upgrade to Apache Airflow 3.2.0, which resolves this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Airflow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow存在安全漏洞，该漏洞源于Dag Authors可能制作导致Web服务器执行任意代码的XCom有效载荷，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Airflow | 3.1.8 ~ 3.2.0 | - |
II. Public POCs for CVE-2026-33858
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|---|
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Same Patch Batch · Apache Software Foundation · 2026-04-13 · 5 CVEs total
| CVE-2025-66236 | Apache Airflow: Secrets from Airflow config file logged in plain text in DAG run logs UI | |
| CVE-2026-34476 | Apache SkyWalking MCP: Server-Side Request Forgery via SW-URL Header in MCP Server | |
| CVE-2026-35337 | Apache Storm Client: RCE through Unsafe Deserialization via Kerberos TGT Credential Handli | |
| CVE-2026-35565 | Apache Storm UI: Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata in St |
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