What is CVE-2026-11400?

CVE-2026-11400 is a high-severity vulnerability in AWS Advanced Jdbc Wrapper, classified under Untrusted Search Path. CVSS score: 8.0/10. Published 2026-06-05.

How severe is CVE-2026-11400?

High severity. CVSS v3 base score is 8.0 out of 10.

Vulnerability in AWS Advanced Jdbc Wrapper

CVE-2026-11400

An untrusted search path issue in the GlobalDatabasePlugin in the AWS Advanced JDBC Wrapper for Amazon Aurora PostgreSQL will allow a remote authenticated low-privilege actor to escalate privileges to those of another Amazon RDS user, including rds_superuser, via a crafted function created by the actor that runs when that user connects to the cluster through an affected wrapper. To remediate this issue, users should upgrade to AWS Advanced JDBC Wrapper version 4.0.1.

EPSS: 0.003 (22.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Aws Advanced Jdbc Wrapper — versions 3.0.0

Weakness classification (CWE)

CWE-426 — Untrusted Search Path

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (patch)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (third-party-advisory)

Frequently asked questions

What is CVE-2026-11400?: CVE-2026-11400 is a high-severity vulnerability in AWS Advanced Jdbc Wrapper, classified under Untrusted Search Path. CVSS score: 8.0/10. Published 2026-06-05.
How severe is CVE-2026-11400?: High severity. CVSS v3 base score is 8.0 out of 10.