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CVE-2026-18061— Improper Restriction of XML External Entity References in AWS Advanced JDBC Wrapper RemoteQueryCachePlugin

Quick assessment

Affected
AWS AWS Advanced JDBC Wrapper
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Amazon Web Services JDBC Driver是美国Amazon公司的一款增强数据库连接可靠性与管理能力的JDBC驱动包装器。 Amazon Web Services JDBC Driver 3.3.0版本至4.2.0版本存在输入验证错误漏洞，该漏洞源于RemoteQueryCachePlugin对XML外部实体引用限制不当，可能导致拥有共享缓存基础设施写权限的攻击者通过缓存列值中的特制XML数据，泄露读取缓存查询结果的应用程序主机上的敏感文件，包括存储的数据库和IAM角色凭据。

CVSS 5.9 · Medium EPSS 0.46% · P40

Possible ATT&CK Techniques 1 AI

T1597 · Search Closed Sources

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS AWS Advanced JDBC Wrapper 3.3.0≤ 4.2.0 affected
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I. Basic Information for CVE-2026-18061

Vulnerability Information
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Vulnerability Title
Improper Restriction of XML External Entity References in AWS Advanced JDBC Wrapper RemoteQueryCachePlugin
Source: CVE Program / CVE List V5
Vulnerability Description
Improper restriction of XML external entity references in the RemoteQueryCachePlugin in AWS Advanced JDBC Wrapper 3.3.0 through 4.2.0 might allow an actor with write access to the shared cache infrastructure to disclose sensitive files from application hosts that read cached query results, including stored database and IAM role credentials, via crafted XML data in a cached column value. To remediate this issue, users should upgrade to version 4.3.0 or later.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon Web Services JDBC Driver 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon Web Services JDBC Driver是美国Amazon公司的一款增强数据库连接可靠性与管理能力的JDBC驱动包装器。 Amazon Web Services JDBC Driver 3.3.0版本至4.2.0版本存在输入验证错误漏洞，该漏洞源于RemoteQueryCachePlugin对XML外部实体引用限制不当，可能导致拥有共享缓存基础设施写权限的攻击者通过缓存列值中的特制XML数据，泄露读取缓存查询结果的应用程序主机上的敏感文件，包括存储的数据库和IAM角色凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS AWS Advanced JDBC Wrapper 3.3.0 ~ 4.2.0 -

II. Public POCs for CVE-2026-18061

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III. Intelligence Information for CVE-2026-18061

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Vendor Advisories for CVE-2026-18061 (1)

Vendor Pages for CVE-2026-18061 (2)

Same Patch Batch · AWS · 2026-09-11 · 5 CVEs total

CVE-2026-89066 7.8 HIGH OS command injection in the task synthesis component in projen
CVE-2026-89065 7.1 HIGH Relative path traversal in the generated file manifest cleanup component in projen
CVE-2026-89090 5.9 MEDIUM Denial of service in the event stream header decoder in AWS SDK for Go v2
CVE-2026-89332 5.5 MEDIUM Kiro IDE Sensitive Workspace Data Exfiltration via Agent-Written Workspace Configuration

IV. Related Vulnerabilities

Same product: AWS Advanced JDBC Wrapper
Same vendor: AWS
Same weakness: CWE-611