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CVE-2026-35561 Amazon CVE debrief

CVE-2026-35561 debrief based on the supplied source corpus. The CVE record was published on 2026-04-03T21:17:12.250Z and has not been modified since then. The NVD entry is currently Modified. The vulnerability affects Amazon Athena ODBC driver deployments, specifically versions before 2.1.0.0, and involves insufficient authentication security controls in browser-based authentication components, potentially allowing threat actors to intercept or hijack authentication sessions. Defenders should assess exposure and prioritize upgrading to version 2.1.0.0.

Vendor
Amazon
Product
Amazon Athena ODBC driver
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-03
Original CVE updated
2026-10-20
Advisory published
2026-04-03
Advisory updated
2026-10-20

Who should care

Defenders responsible for Amazon Athena ODBC driver deployments should assess exposure and prioritize upgrading to version 2.1.0.0. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify authentication session security and ensure that deployments are updated to the latest version.

Why it matters

CVE-2026-35561 requires verification of authentication session security and exposure assessment for Amazon Athena ODBC driver deployments. Upgrading to version 2.1.0.0 is recommended to address insufficient authentication security controls.

  • Verify authentication session security
  • Assess exposure of Amazon Athena ODBC driver deployments
  • Prioritize upgrading to version 2.1.0.0
  • Monitor for potential authentication session hijacking attempts

Technical summary

Insufficient authentication security controls in the browser-based authentication components in Amazon Athena ODBC driver before 2.1.0.0 might allow a threat actor to intercept or hijack authentication sessions due to insufficient protections in the browser-based authentication flows. The vulnerability is critical, with a CVSS score of 9.1, and affects Amazon Athena ODBC driver deployments. Defenders should prioritize upgrading to version 2.1.0.0 to address the vulnerability. The NVD entry provides additional details on the vulnerability assessment.

Defensive priority

Defenders should prioritize upgrading to version 2.1.0.0 of the Amazon Athena ODBC driver to address insufficient authentication security controls.

Recommended defensive actions

  • Upgrade to version 2.1.0.0 of the Amazon Athena ODBC driver
  • Review and update authentication configurations
  • Monitor for potential authentication session hijacking attempts
  • Verify authentication session security
  • Assess exposure of Amazon Athena ODBC driver deployments
  • Prioritize upgrading to version 2.1.0.0
  • Track exceptions and retest remediated assets

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, and vendor advisories and release notes offer guidance on remediation. The vulnerability has been assessed by the NVD and assigned a CVSS score of 9.1, indicating critical severity. There are no known instances of exploitation, but defenders should verify authentication session security and assess exposure of Amazon Athena ODBC driver deployments.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-35561 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-35561

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-35561 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-35561

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://aws.amazon.com/security/security-bulletins/2026-013-aws/

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Vendor Advisory

  • Source reference

    Unverified legacy reference

    URL: https://docs.aws.amazon.com/athena/latest/ug/odbc-v2-driver-release-notes.html

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Release Notes

  • Source reference

    Unverified legacy reference

    URL: https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Linux/AmazonAthenaODBC-2.1.0.0.rpm

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Patch, Product

  • Source reference

    Unverified legacy reference

    URL: https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Mac/Intel/AmazonAthenaODBC-2.1.0.0_x86.pkg

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Patch, Product

  • Source reference

    Unverified legacy reference

    URL: https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Mac/arm/AmazonAthenaODBC-2.1.0.0_arm.pkg

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Patch, Product

  • Source reference

    Unverified legacy reference

    URL: https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Windows/AmazonAthenaODBC-2.1.0.0.msi

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Patch, Product

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.