CyberSecBulletin
CVE-2026-27173NVD status: Analyzed

Apache Airflow CNCF Kubernetes provider: Insertion of Sensitive Information into Externally-Accessible File or Directory

Published Updated By the CyberSecBulletin desk

CVE-2026-27173 is a high-severity insertion of sensitive information into externally-accessible file or directory vulnerability in Apache Airflow CNCF Kubernetes provider from Apache, with a CVSS 3.1 base score of 8.7 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 10.17.0 as the first without the flaw, so updating Apache Airflow CNCF Kubernetes provider to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.16% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Apache Airflow CNCF Kubernetes provider to 10.17.0 or a later version.
  2. Update Apache-airflow-providers-cncf-kubernetes to 10.17.0 or a later version.
  3. Read the advisory on lists.apache.org for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
ApacheApache Airflow CNCF Kubernetes providerbefore 10.17.010.17.0
ApacheApache-airflow-providers-cncf-kubernetesbefore 10.17.010.17.0

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
LowPerformance or availability is reduced.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L. Scored by CISA (ADP).

Official description

JWT tokens that were used by workers in Kubernetes Executors have been exposed to users who had read only access to Kuberentes Pods. This could allow users with just read-only access to perform actions that were only available to running tasks via Task SDK and potentially allow to modify state of Airflow Database for tasks.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Insertion of Sensitive Information into Externally-Accessible File or Directory

The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.

How developers prevent this class of flaw

  • Do not expose file and directory information to the user.

More Insertion of Sensitive Information into Externally-Accessible File or Directory vulnerabilities (CWE-538)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Patches and release notes

Third-party and government advisories

Other vulnerabilities in Apache Airflow CNCF Kubernetes provider

All Apache Airflow CNCF Kubernetes provider vulnerabilities

Recent Insertion of Sensitive Information into Externally-Accessible File or Directory vulnerabilities

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