{"id":"CVE-2026-11400","aliases":["GHSA-mhww-p97m-3368"],"title":"AWS-JDBC Wrapper: Privilege Escalation in Aurora PostgreSQL instance","summary":"AWS-JDBC Wrapper: Privilege Escalation in Aurora PostgreSQL instance","severity":"high","cvss":8,"cwe":["CWE-426"],"vendor":"amazon","product":"software.amazon.jdbc:aws-advanced-jdbc-wrapper","ecosystem":"maven","affected":["software.amazon.jdbc:aws-advanced-jdbc-wrapper >= 3.0.0, < 4.0.1"],"patched":["software.amazon.jdbc:aws-advanced-jdbc-wrapper 4.0.1"],"published":"2026-07-17","updated":"2026-07-17","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-mhww-p97m-3368","references":[{"url":"https://github.com/aws/aws-advanced-jdbc-wrapper/security/advisories/GHSA-mhww-p97m-3368"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11400"},{"url":"https://aws.amazon.com/security/security-bulletins/2026-039-aws"},{"url":"https://github.com/aws/aws-advanced-jdbc-wrapper/releases/tag/4.0.1"},{"url":"https://www.cve.org/cverecord?id=CVE-2026-11400"},{"url":"https://github.com/advisories/GHSA-mhww-p97m-3368"}],"tags":["ghsa","maven"],"epss":0.00305,"epssPercentile":0.20628,"ingestedAt":"2026-07-17T19:14:48.474Z","slug":"CVE-2026-11400","body":"## Overview\n\nAurora 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.\n\n## Affected packages\n\n- `software.amazon.jdbc:aws-advanced-jdbc-wrapper >= 3.0.0, < 4.0.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `software.amazon.jdbc:aws-advanced-jdbc-wrapper 4.0.1`","depth":"twilight","depthScore":44,"depthScoreParts":{"impact":44,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}