AWS-JDBC Wrapper: Privilege Escalation in Aurora PostgreSQL instance
Aurora PostgreSQL is a fully managed relational database engine that's compatible with PostgreSQL.
The team has identified CVE-2026-11400, an issue in Aurora PostgreSQL using the AWS Advanced JDBC Wrapper
Impact An issue in AWS Wrappers for Amazon Aurora PostgreSQL will allow for privilege escalation to rds_superuser role. A low privilege authenticated user can create a crafted function that could be executed with permissions of other Amazon Relational Database Service (RDS) users.
Impacted versions: AWS Advanced JDBC Wrapper >= 3.0.0 and < 4.0.1
Patches This issue has been addressed in AWS JDBC Wrapper v4.0.1. It is recommended to upgrade to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
Workarounds Remove the public schema from the search path.
Resources If there are any questions or comments about this advisory, contact [AWS/Amazon] Security via vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.
Acknowledgement
AWS-JDBC Wrapper would like to thank x.com/ph0smet for collaborating on this issue through the coordinated vulnerability disclosure process.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | software.amazon.jdbc:aws-advanced-jdbc-wrapper | >= 3.0.0, < 4.0.1 | 4.0.1 |
References
- https://github.com/aws/aws-advanced-jdbc-wrapper/security/advisories/GHSA-mhww-p97m-3368
- https://nvd.nist.gov/vuln/detail/CVE-2026-11400
- https://aws.amazon.com/security/security-bulletins/2026-039-aws
- https://github.com/aws/aws-advanced-jdbc-wrapper
- https://github.com/aws/aws-advanced-jdbc-wrapper/releases/tag/4.0.1
- https://www.cve.org/cverecord?id=CVE-2026-11400
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-426- Platform
- Java / Kotlin (Maven)
- Package
software.amazon.jdbc:aws-advanced-jdbc-wrapper- Disclosed
- 17.07.2026
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-mhww-p97m-3368 - CC BY 4.0
Vulnerability history: software.amazon.jdbc:aws-advanced-jdbc-wrapper
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 11.2025 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2025: 1
- 2026: 1
-
AWS-JDBC Wrapper: Privilege Escalation in Aurora PostgreSQL instance this entry
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