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Vulnerabilities

Vulnerability · CVE-2026-42252

Apache Airflow's official documentation at ("Passing Parameters when triggering Dags") showed a verbatim example without any quoting / sanitization warning.

Published Jun 1, 2026 · catalog updated Jul 21, 2026 · the affected product

Check if you run it

No confirmed exploitation is on record for CVE-2026-42252. EPSS is 0.59%. Act only if a listed version of the affected product is installed.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.59%
Remediation
Not established
Affected products
cpe apache/airflow

Apache Airflow's official documentation at ("Passing Parameters when triggering Dags") showed a verbatim example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the field of the trigger API: an authenticated trigger user could supply as a value and reach an on the worker. This CVE covers the documentation correction in 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 3.2.2 or later to pick up the corrected documentation shipped with the release.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/airflowversion unspecified

How to fix CVE-2026-42252

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42252. EPSS is 0.59%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine. EPSS 0.59%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 1, 2026 · NIST NVD

    Detected

    Apache Airflow's official documentation at ("Passing Parameters when triggering Dags") showed a verbatim example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the fie

  2. Jul 21, 2026 · NIST NVD

    Updated

    Apache Airflow's official documentation at ("Passing Parameters when triggering Dags") showed a verbatim example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the fie

Sources

  • CVE.orgVulnerability recordCVE-2026-42252

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-42252

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-42252

    Apache Airflow's official documentation at ("Passing Parameters when triggering Dags") showed a verbatim example without any quoting / sanitization warning. Dag authors who copied

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.