Privilege Escalation in AWS Advanced JDBC Wrapper for Amazon Aurora PostgreSQL
CVE-2026-11400

8.6HIGH

Key Information:

Vendor

Aws

Status
Aws Advanced Jdbc Wrapper
Vendor
CVE Published:
5 June 2026

What is CVE-2026-11400?

An untrusted search path issue in the GlobalDatabasePlugin in the AWS Advanced JDBC Wrapper for Amazon Aurora PostgreSQL will allow a remote authenticated low-privilege actor to escalate privileges to those of another Amazon RDS user, including rds_superuser, via a crafted function created by the actor that runs when that user connects to the cluster through an affected wrapper.

To remediate this issue, users should upgrade to AWS Advanced JDBC Wrapper version 4.0.1.

Affected Version(s)

AWS Advanced JDBC Wrapper 3.0.0 < 4.0.1

References

https://github.com/aws/aws-advanced-jdbc-wrapper/releases...
patch
https://aws.amazon.com/security/security-bulletins/2026-0...
vendor-advisory
https://www.cve.org/cverecord?id=CVE-2026-11400
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.