CVE-2026-11400
Bulletin ID: 2026-039-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 06/025/2026 12:15 PM PDT Description: Amazon Aurora PostgreSQL a fully managed relational database engine that's compatible with PostgreSQL. We identified CVE-2026-11400(JDBC) and CVE-2026-11401(Go), 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 - AWS Advanced Go Wrapper release 2026-04-06 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
CSIRTS triage
- What
- Privilege escalation to rds_superuser role can occur via crafted functions.
- Who is affected
- Low privilege authenticated users of Amazon Aurora PostgreSQL.
- Urgency
- Remediation is necessary to prevent privilege escalation.
- Action
- Update to the latest versions of the AWS Advanced JDBC and Go Wrappers.
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Exploitation outlook
- Low exploitation risk0.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Advisory coverage (1)
- lowCVE-2026-11400 and CVE-2026-11401aws · 2026-06-05
External references
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