How severe is CVE-2026-40690?

CVE-2026-40690 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-40690 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40690?

CVE-2026-40690 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40690?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-40690 have an EU (EUVD) identifier?

Yes. CVE-2026-40690 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25419.

When was CVE-2026-40690 published?

CVE-2026-40690 was published on 2026-04-24 and last updated on 2026-06-17.

CVE-2026-40690

CVE-2026-40690 is a medium-severity vulnerability in Apache Airflow with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1220.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25419
Weakness: CWE-1220
Affected product: Apache Airflow
Published: 2026-04-24
Last modified: 2026-06-17

Description

The asset dependency graph did not restrict nodes by the viewer's DAG read permissions: a user with read access to at least one DAG could browse the asset graph for any other asset in the deployment and learn the existence and names of DAGs and assets outside their authorized scope. Users are recommended to upgrade to version 3.2.1, which fixes this issue.

Frequently asked questions

What is CVE-2026-40690?: The asset dependency graph did not restrict nodes by the viewer's DAG read permissions: a user with read access to at least one DAG could browse the asset graph for any other asset in the deployment and learn the existence and names of DAGs and assets outside their authorized scope. Users are recommended to upgrade to version 3.2.1, which fixes this issue.
How severe is CVE-2026-40690?: CVE-2026-40690 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-40690 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40690?: CVE-2026-40690 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40690?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40690 have an EU (EUVD) identifier?: Yes. CVE-2026-40690 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25419.
When was CVE-2026-40690 published?: CVE-2026-40690 was published on 2026-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

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