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GHSA-mhww-p97m-3368
No affected components available
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.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
- CVE-2026-11400Alias
- EUVD-2026-34900Alias
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