CVE-2026-18061
Received Received - Intake

XML External Entity Injection in AWS Advanced JDBC Wrapper

Publication date: 2026-09-11

Last updated on: 2026-09-11

Assigner: AMZN

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.

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Meta Information

Published
2026-09-11
Last Modified
2026-09-11
Generated
2026-09-11
AI Q&A
2026-09-11
EPSS Evaluated
N/A
NVD
CVE-2026-18061
EUVD
EUVD-2026-76153

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
aws advanced_jdbc_wrapper From 3.3.0 (inc) to 4.3.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-611 The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

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Executive Summary

CVE-2026-18061 is an XML External Entity (XXE) vulnerability in the AWS Advanced JDBC Wrapper's RemoteQueryCachePlugin. It affects versions 3.3.0 through 4.2.0. When the plugin is enabled with a shared cache, an attacker with write access can inject malicious XML into cached column values. When parsed, this XML may resolve external entities, potentially exposing sensitive files like database or IAM credentials.

Detection Guidance

To detect this vulnerability, check if the RemoteQueryCachePlugin is enabled in your AWS Advanced JDBC Wrapper configuration. Inspect cache entries for XML data in shared caches like Redis or Valkey. Look for unusual XML payloads or external entity references in cached query results.

Impact Analysis

An attacker with write access to the shared cache could disclose sensitive files from application hosts that read cached query results. This includes stored database credentials and IAM role credentials. The impact is limited to systems using the RemoteQueryCachePlugin with a shared cache like Redis or Valkey.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of sensitive data such as database credentials or IAM role credentials, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Exposure of such data could result in regulatory penalties or breaches of data protection obligations.

Mitigation Strategies

Immediately upgrade to AWS Advanced JDBC Wrapper version 4.3.0 or later. If upgrading is not possible, disable the RemoteQueryCachePlugin and restrict write access to the shared cache infrastructure to trusted principals only.

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