High severity · published Apr 18, 2026
CVE-2026-25917
Apache Airflow: API extra-links triggers XCom deserialization/class instantiation (Airflow 3.1.5)
7.2
CVSS
0.8%
EPSS
No
On KEV
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 fixes the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache Airflow · Apache Software Foundation
before 3.2.0 · source: vendor
AI
Airflow · Apache
before 3.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25917
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25917
Issue Tracking
https://github.com/apache/airflow/pull/61641
Mailing List
https://lists.apache.org/thread/6whgpkqbh12rvpfmvcg8b0vwlv4hq3po
Mailing List
http://www.openwall.com/lists/oss-security/2026/04/17/9
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