CVE-2026-65321: LAUGHINGMAN7743 Pyathena

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

• LAUGHINGMAN7743 Pyathena: up to and including 3.35.3

Published 2026-08-02. Last modified 2026-09-24.