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CVE-2026-59244

Apache Airflow: Secrets masker: `var.json` Variable values not masked in the Rendered Templates UI

Published: Aug 12, 2026Updated: Aug 18, 2026 Sources: CVE List NVDCWE-312
6.5MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 86.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Apache Airflow's secrets masker did not mask `var.json` Variable values whose value is a dict in the Rendered Templates UI — the dict value failed an `isinstance(str)` guard — so a secret stored as a JSON Variable and referenced in a template via `var.json` was displayed in cleartext to any user with access to that task's Rendered Templates view. Users are advised to upgrade to apache-airflow 3.3.1 or later, which masks nested Variable values regardless of type.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-312

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache AirflowOn-premWeb App
Web & CMS Plugins
apache
oss-project·USaka apache http server, apache httpd
airflowOn-premLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Credential Access
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References

https://github.com/apache/airflow/pull/68975
github.com
https://lists.apache.org/thread/fncod6vttfo5fvmfs3h9r8s2kmm9j1n6
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/08/12/7
openwall.com

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