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CVE-2026-8178: CVE-2026-8178: Remote Code Execution via Unsafe Reflection in Amazon Redshift JDBC Driver

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CVE-2026-8178: Remote Code Execution via Unsafe Reflection in Amazon Redshift JDBC Driver

Vulnerability ID: CVE-2026-8178
CVSS Score: 8.1
Published: 2026-05-14

The Amazon Redshift JDBC Driver prior to version 2.2.2 contains a remote code execution vulnerability. The driver processes connection properties beginning with the datatype. prefix by passing the user-supplied value to Class.forName(). This allows attackers who control JDBC connection strings to load arbitrary classes and execute malicious code via static initializers within the application's JVM context.

TL;DR

Unsafe class loading in the Amazon Redshift JDBC Driver (< 2.2.2) permits remote code execution. Attackers controlling JDBC URL properties can trigger arbitrary class instantiation, leading to JVM compromise.

⚠️ Exploit Status: POC

Technical Details

  • CWE ID: CWE-470
  • Attack Vector: Network
  • CVSS v3.1: 8.1
  • EPSS Score: 0.00066
  • Impact: Remote Code Execution
  • Exploit Status: Proof of Concept
  • CISA KEV: No

Affected Systems

  • Amazon Redshift JDBC Driver < 2.2.2
  • Java applications utilizing the vulnerable driver with user-controlled connection strings
  • Amazon Redshift JDBC Driver: < 2.2.2 (Fixed in: 2.2.2)

Code Analysis

Commit: f8b5e0f

Removes unsupported datatype parameter processing.

Commit: d50b58c

Upgrades SSL/TLS protocols to TLS 1.2+ to prevent downgrade attacks.

Commit: 312b6be

Improves error handling in authentication plugins.

Mitigation Strategies

  • Upgrade Amazon Redshift JDBC Driver to version 2.2.2 or newer
  • Implement strict input validation and sanitization for JDBC URLs
  • Reject connection parameters containing the datatype. prefix
  • Execute JVM processes with restricted, unprivileged service accounts
  • Apply network egress filtering on application servers

Remediation Steps:

  1. Identify all projects utilizing the Amazon Redshift JDBC Driver via dependency scanning tools.
  2. Update the dependency configuration (e.g., Maven, Gradle) to require version 2.2.2 of the redshift-jdbc42 artifact.
  3. Review application source code for instances where user input directly constructs or modifies JDBC connection strings.
  4. Implement an allowlist of permitted JDBC properties if dynamic connection string generation is a strict business requirement.
  5. Deploy the updated application to staging environments and verify database connectivity functionality.
  6. Roll out the patched applications to production systems.

References

Read the full report for CVE-2026-8178 on our website for more details including interactive diagrams and full exploit analysis.

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