CVE-2026-11400

Privilege Escalation in AWS Advanced JDBC Wrapper for Amazon Aurora PostgreSQL

State: Published
Severity: 8.6 High
Published: Jun 5, 2026
Updated: Oct 20, 2026
Reserved: Jun 5, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	AMZN
3.1	8.0 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H	AMZN

Weaknesses

CWE-426 Untrusted Search Path

Affected Products

Product	Versions
AWS Advanced JDBC WrapperAWS	3.0.0 to before 4.0.1Affected

References

https://github.com/aws/aws-advanced-jdbc-wrapper/releases/tag/4.0.1patch
https://aws.amazon.com/security/security-bulletins/2026-039-aws/vendor-advisory
https://github.com/aws/aws-advanced-jdbc-wrapper/security/advisories/GHSA-mhww-p97m-3368third-party-advisory

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