CVE-2026-33858— Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API
Quick assessment
Affected
Apache Software Foundation Apache Airflow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-33858
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
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
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-33858
请登录查看更多情报信息。
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 |
IV. Related Vulnerabilities
Same product: Apache Airflow
-
CVE-2026-86473
Apache Airflow: Logout ignores a presented Authorization bea -
CVE-2026-75158
Apache Airflow: Assets events API returns asset events for e -
CVE-2026-82355
Apache Airflow: Session cookie silently overrides explicit A -
CVE-2026-75157
Apache Airflow: Asset queued-events DELETE endpoints gated o -
CVE-2026-59244
Apache Airflow: Secrets masker: `var.json` Variable values n
Same vendor: Apache Software Foundation
-
CVE-2026-113582
Apache Abdera: XML external entity expansion in Atom documen -
CVE-2026-103634
Apache DataSketches: datasketches-cpp: Out-of-bounds read an -
CVE-2026-112381
Apache Traffic Server: Nullptr dereference in net_write_io o -
CVE-2026-111817
Apache Traffic Server: Dropping chunked trailers stalls a pa -
CVE-2026-111812
Apache Traffic Server: origin_server_auth signs client-contr
Same weakness: CWE-502
-
CVE-2026-114704
WordPress Relevanssi plugin <= 4.28.4 - PHP Object Injectio -
CVE-2026-114196
WordPress Paytium plugin <= 5.0.5 - PHP Object Injection vul -
CVE-2026-94075
WordPress Newsletters plugin <= 4.18.1 - PHP Object Injectio -
CVE-2026-115806
Prime Mover <= 2.2.1 - Unauthenticated PHP Object Injection -
CVE-2026-57845
Hugging Face Datasets 5.1.0 Pickle Deserialization RCE via P
V. Comments for CVE-2026-33858
No comments yet