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CVE-2021-26697

Status: ModifiedMedium (5.3)—

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.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Apache — Airflow

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-26697",
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      "value": "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."
    },
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      "lang": "es",
      "value": "El endpoint lineage de la API Experimental obsoleta no estaba protegido por autenticación en Airflow versión 2.0.0. Esto permitió a usuarios no autenticados llegar a ese endpoint. Este es un problema de baja gravedad, ya que el atacante debe estar consciente de determinados parámetros para pasar a ese endpoint e incluso después puede obtener algunos metadatos sobre un DAG y una tarea. Este problema afecta a Apache Airflow versión 2.0.0"
    }
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  "lastModified": "2026-06-17T03:43:40.357",
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