Arbitrary Code Injection Affecting airflow-core-2 package, versions <2.11.2-r13


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.32% (23rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-AIRFLOWCORE2-20552498
  • published7 Oct 2026
  • disclosed2 Oct 2026

Introduced: 2 Oct 2026

NewCVE-2026-104851  (opens in a new tab)
CWE-94  (opens in a new tab)
CWE-1336  (opens in a new tab)

How to fix?

Upgrade Chainguard airflow-core-2 to version 2.11.2-r13 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream airflow-core-2 package and not the airflow-core-2 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

fsspec is a specification and Python implementation framework for filesystem interfaces. From 0.9.0 until 2026.6.0, fsspec.implementations.reference.ReferenceFileSystem evaluates fields from Kerchunk reference JSON documents through unrestricted jinja2.Template(...).render(...) calls in _process_references1._render_jinja, _process_templates, and _process_gen in fsspec/implementations/reference.py. A document supplied inline or fetched from an attacker-controlled URL can provide template expressions that execute Python code when the reference filesystem is opened, including through consumers such as xarray, before referenced data is read. The _process_gen path is reached whenever a document includes a gen array, while the other paths depend on template-related options and values. This issue is fixed in version 2026.6.0.

CVSS Base Scores

version 3.1