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🛡️ CVE-2026-11400 — aws-advanced-jdbc-wrapper

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-426 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [[email protected]](mailto:[email protected]). Please do not create a public GitHub issue.

Acknowledgement

AWS-JDBC Wrapper would like to thank [x.com/ph0smet](http://x.com/ph0smet) for collaborating on this issue through the coordinated vulnerability disclosure process.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-11400 is classified as CWE-426: Untrusted Search Path. The product resolves a library or executable using a search path an attacker can influence.

Affected software

CVE-2026-11400 is recorded against 2 packages.

  • software.amazon.jdbc:aws-advanced-jdbc-wrapper (from 3.0.0 up to 4.0.1)
  • unknown

Timeline and source

Published on 17 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
aws.amazon.com (Web)
github.com (Package)
github.com (Web)
www.cve.org (Web)

Other advisories for this package

software.amazon.jdbc:aws-advanced-jdbc-wrapper has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-426: Untrusted Search Path) in other software:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE CWE-426
Public Exploit ✅ No
Source NVD
Published 2026-07-17
Updated 2026-08-20
Modified 2026-07-17
Fix URL N/A

Affected Packages

Software From version Fixed in
software.amazon.jdbc:aws-advanced-jdbc-wrapper 3.0.0 4.0.1
unknown — —

Similar Threats

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