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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:62515
https://access.redhat.com/errata/RHSA-2026:62555
https://access.redhat.com/errata/RHSA-2026:63302
https://access.redhat.com/security/cve/CVE-2026-17615
https://bugzilla.redhat.com/show_bug.cgi?id=2507635

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-31 17:17

Updated : 2026-09-11 18:16

NVD link : CVE-2026-17615

Mitre link : CVE-2026-17615

CVE.ORG link : CVE-2026-17615

JSON object : View

Products Affected

No product.

CWE

CWE-611

Improper Restriction of XML External Entity Reference

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