XML External Entity (XXE) Injection Affecting resteasy3.0 package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.35% (29th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RESTEASY30-19512357
  • published3 Sept 2026
  • disclosed31 Aug 2026

Introduced: 31 Aug 2026

NewCVE-2026-17615  (opens in a new tab)
CWE-611  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest resteasy3.0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream resteasy3.0 package and not the resteasy3.0 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1