laughingman7743 PyAthena up to 3.35.3 Parameter Formatter DefaultParameterFormatter.format sql injection

Summaryinfo

A vulnerability classified as critical has been found in laughingman7743 PyAthena up to 3.35.3. This impacts the function DefaultParameterFormatter.format of the component Parameter Formatter. This manipulation causes sql injection. This vulnerability is registered as CVE-2026-65321. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in laughingman7743 PyAthena up to 3.35.3. It has been declared as critical. Affected by this vulnerability is the function DefaultParameterFormatter.format of the component Parameter Formatter. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-65321 since 07/21/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1505 for this issue.

Upgrading to version 3.35.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-52004). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• laughingman7743

Name

• PyAthena

Version

• 3.35.0
• 3.35.1
• 3.35.2
• 3.35.3

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion