CVE-2026-65321
CriticalCVSS 9.8Summary
PyAthena prior to 3.35.4 contains a SQL injection vulnerability in DefaultParameterFormatter.format(). Unauthenticated attackers can inject arbitrary SQL by exploiting improper quote-escaping.
Risk Assessment
Attackers can exfiltrate data via UNION SELECT, execute destructive statements, and control CTAS destination and content.
Recommendation
Upgrade PyAthena to version 3.35.4 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
PyAthena prior to 3.35.4 contains a sql injection vulnerability that allows unauthenticated attackers to inject arbitrary SQL by exploiting improper quote-escaping in DefaultParameterFormatter.format(), which routes DELETE and CTAS statements to the _escape_hive function that backslash-escapes single quotes rather than doubling them. Because Athena and Trino do not treat backslashes as escape characters inside string literals, attacker-supplied input such as a single quote followed by SQL syntax causes the parser to terminate the string literal prematurely, enabling data exfiltration via UNION SELECT, execution of destructive statements, and attacker-controlled CTAS destination and content.