CVE-2026-35558 Improper neutralization of special elements in authentication components in Amazon Athena ODBC driver

High 7.3 Published 3 Apr 2026 Updated 20 Oct 2026

Attackers can execute arbitrary code or redirect authentication flows via crafted connection parameters in the Amazon Athena ODBC driver.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-35558?

CVE-2026-35558 is a high-severity command injection vulnerability in Amazon Athena ODBC driver, published on 3 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Improper neutralization of special elements in the authentication components in Amazon Athena ODBC driver before 2.1.0.0 might allow a threat actor to execute arbitrary code or redirect authentication flows by using specially crafted connection parameters that are processed by the driver during user-initiated authentication.

To remediate this issue, users should upgrade to version 2.1.0.0.

Weakness: CWE-77

Which versions are affected by CVE-2026-35558?

It affects 1 product.

Products include Amazon Athena Odbc.

How do I fix CVE-2026-35558?

No fix has been published for CVE-2026-35558 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-35558 being exploited?

There is no known exploitation of CVE-2026-35558 in the wild and no public exploit code.

Sources

Also known as GHSA-mc5r-mwqc-w2v3.