SQL Injection in Laughingman7743 Pyathena
CVE-2026-65321
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.
Vulnerability class: SQL Injection
EPSS: 0.010 (60.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Laughingman7743 Pyathena — versions 0, 3.35.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (related)
- disclosure@vulncheck.com (technical-description)
Frequently asked questions
- What is CVE-2026-65321?
- CVE-2026-65321 is a critical-severity vulnerability in Laughingman7743 Pyathena, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-08-02.
- How severe is CVE-2026-65321?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-65321 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.