CVE-2026-35561 Amazon CVE debrief

Who should care

Users of Amazon Athena ODBC driver versions before 2.1.0.0 should prioritize upgrading to version 2.1.0.0 to address potential authentication session hijacking or interception risks. This is a high-priority issue due to its critical severity and potential impact on authentication security.

Technical summary

The Amazon Athena ODBC driver versions before 2.1.0.0 has insufficient authentication security controls in its browser-based authentication components. This vulnerability might allow threat actors to intercept or hijack authentication sessions due to insufficient protections in browser-based authentication flows. The issue is addressed in version 2.1.0.0. Users should review and update authentication configurations, monitor for suspicious authentication activity, and prioritize upgrading to version 2.1.0.0.

Defensive priority

High priority should be given to upgrading Amazon Athena ODBC driver versions before 2.1.0.0 to version 2.1.0.0 to mitigate potential authentication risks. Additionally, users should review and update authentication configurations, monitor for suspicious authentication activity, and implement compensating controls for exposed systems.

Recommended defensive actions

• Upgrade Amazon Athena ODBC driver to version 2.1.0.0
• Review and update authentication configurations
• Monitor for suspicious authentication activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Evidence from official sources indicates that Amazon Athena ODBC driver versions before 2.1.0.0 are vulnerable to insufficient authentication security controls. Users should rely on official vendor advisories and release notes for detailed remediation steps. The CVE record was published on 2026-04-03T21:17:12.250Z and has not been modified since then. There is limited information available about the specific attack vectors or exploits used in the wild.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.