CVE-2021-26697

Airflow vulnerability

CVSS

5.3

EPSS

4.6%

EPSS pct

91th

Exploited

No known

The lineage endpoint of the deprecated Experimental API was not protected by authentication in Airflow 2.0.0. This allowed unauthenticated users to hit that endpoint. This is low-severity issue as the attacker needs to be aware of certain parameters to pass to that endpoint and even after can just get some metadata about a DAG and a Task. This issue affects Apache Airflow 2.0.0.

Affected vendor

Apache

Affected product

Airflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness type (CWE)

CWE-269 — Improper Privilege Management
CWE-306 — Missing Authentication for Critical Function

Published

2021-02-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2021-26697

Confirm whether Apache Airflow is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-26697.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-26697

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