XXE (XML External Entity) in Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin (CVE-2026-18061)
Summary
Vulnerability in Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin (CVE-2026-18061). Confidential information can be exposed externally.
Original description
The description as published by the source.
Bulletin ID: 2026-109-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 09/11/2026 09:30 AM PDT Description: The AWS Advanced JDBC Wrapper is an open-source library that enhances existing JDBC drivers with AWS-specific capabilities such as Aurora failover, IAM authentication, and automated SQL query caching for applications connecting to Amazon Aurora, RDS MySQL, and RDS MariaDB. We identified CVE-2026-18061, an improper restriction of XML external entity (XXE) references in the optional RemoteQueryCachePlugin. When this plugin is enabled with a shared cache, an actor with write access to that cache infrastructure might place crafted XML in a cached column value. When an application subsequently reads that cached result as XML, the wrapper's XML parsers resolve external entities, which might allow the actor to disclose sensitive files readable by the application process, including stored database and IAM role credentials. Impacted versions: >= 3.3.0 and
Source: AWS Security Bulletins NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-18061 has been found in Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin.
Confidential information can be exposed externally. CVSS score: 5.9/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin CVE-2026-18061" on the vendor's site.
CVE-2026-18061 (Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin) — CWE-611 / CVSS v3 5.9
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-611) exists in Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin.
Check the vendor advisory for the affected versions of Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin.
Severity: Medium (CVSS 5.9/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Amazon AWS Advanced JDBC Wrapper RemoteQueryCachePlugin を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- AWS aws.amazon.com
- patch aws.amazon.com
- patch github.com
- patch github.com