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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.

AWS Advanced JDBC Wrapper 版本 3.3.0 至 4.2.0 中，RemoteQueryCachePlugin 对 XML 外部实体引用的限制不当。该缺陷可能导致具有共享缓存基础设施写权限的攻击者，通过向缓存的列值中注入特制的 XML 数据，披露读取缓存查询结果的应用程序主机上的敏感文件，其中包括存储的数据库凭据和 IAM 角色凭据。 修复建议 为修复此问题，用户应升级至 4.3.0 或更高版本。

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1 AI

T1597 · Search Closed Sources
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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

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 · 4 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

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-18061

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