Medium severity · published Sep 29, 2026
CVE-2026-81914
Apache Airflow Google provider: Google Drive query injection via unescaped file and folder names
4.3
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache Airflow Google provider · Apache Software Foundation
before 22.6.0 · source: vendor
AP
Apache-airflow-providers-google · Apache
before 22.6.0 · source: NVD
Affected product
AA
Apache Airflow Google provider
Apache Software Foundation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81914
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81914
patch
https://github.com/apache/airflow/pull/72166
vendor-advisory
https://lists.apache.org/thread/90osv795jrqds051y7v3lcdzhsospooo
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