CVE-2026-11400: AWS-JDBC Wrapper Privilege Escalation Vulnerability
HIGHCVE-2026-11400 is a HIGH (CVSS 8.0) privilege escalation vulnerability (CWE-426: Untrusted Search Path) affecting AWS-JDBC Wrapper libraries in the Maven ecosystem. The issue involves privilege escalation in aurora postgresql instance. Remediation is available by upgrading affected packages to version 4.0.1.
CVE-2026-11400 at a Glance
Security Impact
CVSS: 8.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-11400
To remediate this vulnerability, upgrade all affected AWS-JDBC Wrapper dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>software.amazon.jdbc</groupId>
<artifactId>aws-advanced-jdbc-wrapper</artifactId>
<version>4.0.1</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=software.amazon.jdbcHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-11400, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=software.amazon.jdbcAnalyze the terminal output to locate any version of AWS-JDBC Wrapper in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.0.1), your application is affected.
Note: The mvn dependency:tree -Dincludes=software.amazon.jdbc command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-426: Untrusted Search Path, where the product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. In AWS-JDBC Wrapper, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-11400 Affected AWS-JDBC Wrapper Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
software.amazon.jdbc:aws-advanced-jdbc-wrapper
|
Maven |
≥ 3.0.0
< 4.0.1
|
4.0.1
|
References
Frequently Asked Questions
What is CVE-2026-11400?
Which AWS-JDBC Wrapper versions are affected?
What version fixes CVE-2026-11400?
Is aws-advanced-jdbc-wrapper affected?
What is the CVSS score of CVE-2026-11400?
What CWE is associated with CVE-2026-11400?
How can I check Maven dependencies for CVE-2026-11400?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-mhww-p97m-3368",
"modified" : "2026-07-17T18:40:41Z",
"published" : "2026-07-17T18:40:41Z",
"aliases" : [ "CVE-2026-11400" ],
"summary" : "AWS-JDBC Wrapper: Privilege Escalation in Aurora PostgreSQL instance",
"details" : "Aurora PostgreSQL is a fully managed relational database engine that's compatible with PostgreSQL.\n\nThe team has identified CVE-2026-11400, an issue in Aurora PostgreSQL using the AWS Advanced JDBC Wrapper\n\n\nImpact\nAn 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.\n\nImpacted versions: AWS Advanced JDBC Wrapper >= 3.0.0 and < 4.0.1\n\nPatches\nThis 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. \n\nWorkarounds\nRemove the public schema from the search path.\n\nResources\nIf there are any questions or comments about this advisory, contact [AWS/Amazon] Security via [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.\n\nAcknowledgement \n\nAWS-JDBC Wrapper would like to thank [x.com/ph0smet](http://x.com/ph0smet) for collaborating on this issue through the coordinated vulnerability disclosure process.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
}, {
"type" : "CVSS_V4",
"score" : "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"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "software.amazon.jdbc:aws-advanced-jdbc-wrapper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.0.0"
}, {
"fixed" : "4.0.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/aws/aws-advanced-jdbc-wrapper/security/advisories/GHSA-mhww-p97m-3368"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-11400"
}, {
"type" : "WEB",
"url" : "https://aws.amazon.com/security/security-bulletins/2026-039-aws"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/aws/aws-advanced-jdbc-wrapper"
}, {
"type" : "WEB",
"url" : "https://github.com/aws/aws-advanced-jdbc-wrapper/releases/tag/4.0.1"
}, {
"type" : "WEB",
"url" : "https://www.cve.org/cverecord?id=CVE-2026-11400"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-426" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-07-17T18:40:41Z",
"nvd_published_at" : "2026-06-05T20:17:28Z"
}
}