Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2024-03-06 10:59

Modified

2026-09-08 08:34

Summary

Apache Airflow: Lineage API endpoint for Experimental API missed authentication check

Details

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "airflow",
        "purl": "pkg:bitnami/airflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-26697"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:airflow:2.0.0:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "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.",
  "id": "BIT-airflow-2021-26697",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2024-03-06T10:59:36.299Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://www.openwall.com/lists/oss-security/2021/02/17/2"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r36111262a59219a3e2704c71e97cf84937dae5ba7a1da99499e5d8f9%40%3Cannounce.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519%40%3Cdev.airflow.apache.org%3E"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519%40%3Cusers.airflow.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26697"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Apache Airflow: Lineage API endpoint for Experimental API missed authentication check"
}

CVE-2021-26697 (GCVE-0-2021-26697)

Vulnerability from cvelistv5 – Published: 2021-02-17 14:15 – Updated: 2025-02-13 16:27

Title

Apache Airflow: Lineage API endpoint for Experimental API missed authentication check

Summary

Severity

No CVSS data available.

CWE

CWE-269 - Improper Privilege Management

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1092 records in the last 180 days details

References

4 references

URL	Tags
https://lists.apache.org/thread.html/re21fec81bae…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/02/17/2	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re21fec81bae…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r36111262a59…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Airflow	Affected: Apache Airflow 2.0.0

Credits

Apache Airflow would like to thank Ian Carroll for reporting this issue.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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