CVE-2026-65321 PUBLISHED

PyAthena 3.35.4 SQL Injection via DefaultParameterFormatter DELETE/CTAS

Assigner: VulnCheck
Reserved: 21.07.2026 Published: 02.08.2026 Updated: 02.08.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Product Status

Vendor laughingman7743
Product PyAthena
Versions Default: affected
  • affected from 0 to 3.35.3 (incl.)

Credits

  • Rahul Karne reporter

References

Problem Types

  • Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') CWE