CVE-2026-18061

Improper Restriction of XML External Entity References in AWS Advanced JDBC Wrapper RemoteQueryCachePlugin

State: Published
Severity: 6.0 Medium
Published: Sep 11, 2026
Updated: Sep 11, 2026
Reserved: Jul 28, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.0 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N	AMZN
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L	AMZN

Weaknesses

CWE-611 Improper restriction of XML external entity reference

Affected Products

Product	Versions
AWS Advanced JDBC WrapperAWS	3.3.0 through 4.2.0Affected

References

https://github.com/aws/aws-advanced-jdbc-wrapper/releases/tag/4.3.0patch
https://aws.amazon.com/security/security-bulletins/2026-109-aws/vendor-advisory
https://github.com/aws/aws-advanced-jdbc-wrapper/security/advisories/GHSA-fpvp-qwgm-v6h9third-party-advisory

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