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How CVE-2025-27018 Works
This vulnerability exploits improper input sanitization in Apache Airflow’s MySQL Provider when using `dump_sql` or `load_sql` functions. Attackers can inject malicious SQL queries via the `table` parameter in the UI, which gets executed directly due to insufficient neutralization. This allows unauthorized database operations like data exfiltration, corruption, or privilege escalation. The flaw stems from dynamic SQL construction without prepared statements or parameterized queries, making it susceptible to classic SQL injection techniques.
DailyCVE Form
Platform: Apache Airflow
Version: <6.2.0
Vulnerability: SQL Injection
Severity: Critical
Date: 06/03/2025
Prediction: Patch expected by 06/20/2025
What Undercode Say:
Exploitation
1. Payload Crafting:
table=legit_table; DROP TABLE users--
2. Trigger via UI: Inject payload into `table` parameter during DAG execution.
3. Exfiltrate Data: Use UNION-based injection:
table=legit_table UNION SELECT user,password FROM mysql.user--
Protection
1. Upgrade:
pip install --upgrade apache-airflow-providers-mysql==6.2.0
2. Input Validation:
def sanitize_table_name(name: str) -> str:
if not re.match(r'^[a-zA-Z0-9_]+$', name):
raise ValueError("Invalid table name")
return name
3. Use ORM: Replace raw SQL with Airflow’s SqlAlchemyOperator.
Detection
1. Log Analysis:
grep "suspicious_query" /var/log/airflow/scheduler.log
2. WAF Rules:
location /airflow/ {
modsecurity_rules 'SecRule ARGS "@detectSQLi" "id:1000,deny"';
}
Mitigation
1. Temporary Fix: Restrict UI access:
airflow config set webserver rbac True
2. Database Hardening:
REVOKE DROP ON . FROM 'airflow_user'@'%';
References
- Patch Commit: Apache GitHub
- CVE Details: NVD Link
Analytics: Exploit complexity low due to UI exposure. Patch urgency high for multi-tenant deployments.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
