CVE-2026-81914

Summary

Apache Airflow's Google provider built Google Drive search expressions by interpolating file and folder names directly into single-quoted string literals, without escaping the quote character that delimits them. A name containing an apostrophe therefore terminated the literal early and appended clauses of the attacker's choosing to the query.

The names are frequently not written by the Dag author. In a wildcard gcs_to_gdrive transfer they come from the source bucket listing, so anyone able to create objects in that bucket controls them — typically an external data producer or an ingest-only service account, a different trust principal from the Dag author. An injected clause can broaden the match and so steer which file or folder the hook resolves: an upload can be directed into a folder the attacker named, and, because downloads select the most recently modified match, a download can return a file they placed rather than the one the Dag asked for.

Affects deployments passing externally-sourced names to the Google Drive hook, including wildcard gcs_to_gdrive transfers from buckets writable by less-trusted principals. Users are advised to upgrade to apache-airflow-providers-google 22.6.0 or later, which escapes quote and backslash characters in every value interpolated into a Drive query.

Affected Software

Weaknesses

• CWE-943: CWE-943: Improper Neutralization of Special Elements in Data Query Logic

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/09/29/13

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/apache/airflow/pull/72166
• https://lists.apache.org/thread/90osv795jrqds051y7v3lcdzhsospooo

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