XML External Entity (XXE) Injection Affecting pki-resteasy-client package, versions <0:3.0.26-20.el9_8


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.62% (49th percentile)

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  • Snyk IDSNYK-ALMALINUX9-PKIRESTEASYCLIENT-20250810
  • published29 Sept 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

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

How to fix?

Upgrade AlmaLinux:9 pki-resteasy-client to version 0:3.0.26-20.el9_8 or higher.
This issue was patched in ALSA-2026:72424.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pki-resteasy-client package and not the pki-resteasy-client package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 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