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OpenAdvisories
High ALAS2-2026-3936 1 CVE

Important: resteasy-base security update (Amazon Linux 2)

Published Sep 28, 2026 · Updated Sep 28, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-17615: A flaw was found in RESTEasy's SourceProvider. This vulnerability allows an unauthenticated attacker to perform an unauthenticated remote file read. By sending a specially crafted XML body with a DOCTYPE declaration referencing external entities to an endpoint that accepts application/xml and returns Source or StreamSource, the server can be tricked into resolving the entity and including sensitive file contents in the HTTP response. This is due to the SourceProvider.writeTo() method creating a SAXParser without disabling external entity resolution, leading to an XML External Entity (XXE) vulnerability.

Fixed packages 13

ReleasePackageFixed in
Amazon Linux · 2 resteasy-base 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-atom-provider 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-client 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-jackson-provider 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-javadoc 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-jaxb-provider 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-jaxrs 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-jaxrs-all 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-jaxrs-api 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-jettison-provider 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-providers-pom 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-resteasy-pom 0:3.0.6-4.amzn2.0.2
Amazon Linux · 2 resteasy-base-tjws 0:3.0.6-4.amzn2.0.2

Vulnerabilities 1

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-17615.html