CVE-2026-42359— Apache Airflow: Authenticated RCE via XCom PATCH endpoint — XComUpdateBody missing FORBIDDEN_XCOM_KEYS validator
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-42359
Vulnerability Information
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Vulnerability Title
Apache Airflow: Authenticated RCE via XCom PATCH endpoint — XComUpdateBody missing FORBIDDEN_XCOM_KEYS validator
Source: NVD (National Vulnerability Database)
Vulnerability Description
A bug in Apache Airflow's XCom PATCH endpoint `PATCH /api/v2/xcomEntries/{key}` allowed an authenticated UI/API user with XCom write permission on a Dag to set XCom entries under reserved key names (e.g. `return_value`) that the matching POST endpoint already validated against `FORBIDDEN_XCOM_KEYS`. The endpoint also accepted serialized payload shapes the triggerer's deserializer treats as code; combined, this allowed RCE on the triggerer when the affected task next deferred. Affects deployments where untrusted users have XCom write permission on Dags that defer to the triggerer. This is a fix-bypass of CVE-2026-33858: PR #64148 added the `FORBIDDEN_XCOM_KEYS` validator only on the POST/set path; the PATCH path was not covered. Users who already upgraded for CVE-2026-33858 should additionally upgrade to `apache-airflow` 3.2.2 or later to cover the PATCH-path bypass.
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)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Airflow | 3.2.0 ~ 3.2.2 | - |
II. Public POCs for CVE-2026-42359
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Patches & Fixes for CVE-2026-42359 (1)
Mailing List Discussions for CVE-2026-42359 (1)
Same Patch Batch · Apache Software Foundation · 2026-06-01 · 28 CVEs total
| CVE-2026-44825 | 8.1 HIGH | Apache Solr: Enabling BasicAuth using bin/solr CLI configures additional insecure users |
| CVE-2026-48827 | 7.1 HIGH | Apache MINA SSHD: Path traversal in org.apache.sshd:sshd-git |
| CVE-2026-45192 | Apache Airflow: Incomplete Redaction of Sensitive Fields in Connection Extra API Response | |
| CVE-2026-49328 | Apache Fesod (Incubating): Improper validation of user-supplied URLs leading to SSRF | |
| CVE-2026-35563 | Apache Directory LDAP API: LDAP client implementation does not verify if the server certif | |
| CVE-2026-49270 | Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Durable Subscription Disclos | |
| CVE-2026-49157 | Apache ActiveMQ: Authenticated low-privilege Web users retain Jolokia broker-management ca | |
| CVE-2026-46605 | Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Incomplete authorization dur | |
| CVE-2026-45505 | Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Jolokia `addNetworkConnector | |
| CVE-2026-42588 | Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Remote Code Execution via Jo | |
| CVE-2026-42253 | Apache ActiveMQ, Apache ActiveMQ Web: HTTP Response Header Injection via JMS Message Prope | |
| CVE-2026-49298 | Apache Airflow: JWT Token Exposure in KubernetesExecutor Command-Line Arguments | |
| CVE-2026-48726 | Apache Airflow: revoke_token() unreachable in FabAuthManager / KeycloakAuthManager logout | |
| CVE-2026-46764 | Apache Airflow: Event Log detail endpoint bypasses DAG-scoped event log permission filter | |
| CVE-2026-45426 | Apache Airflow: Log server JWT authorization bypass via Python lstrip() character strippin | |
| CVE-2026-45360 | Apache Airflow: Arbitrary import in custom deadline-reference deserialization | |
| CVE-2026-42358 | Apache Airflow: Variable masker depth-limit bypass returns cleartext nested secrets | |
| CVE-2026-42360 | Apache Airflow: Rendered template truncation bypasses nested sensitive-key masking | |
| CVE-2026-42252 | Apache Airflow: BashOperator Jinja2 injection via dag_run.conf — low-privilege user patter | |
| CVE-2026-41084 | Apache Airflow: API authorization bypass: bulk TaskInstances allows cross-DAG mutation |
Showing top 20 of 28 CVEs. View all on vendor page → →
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