HIGH

CVE-2026-17615

Resteasy-core: resteasy sourceprovider remote unauthenticated file read

CVSS v3

7.5

HIGH

EPSS Score

0.3 %

exploit probability, as of 2026-09-28

CISA KEV

known exploited

Exploitation

none

SSVC status

Description

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

Technical details

Published: 2026-08-31
Last Modified: 2026-09-01

Frequently asked questions

What is CVE-2026-17615?

Is CVE-2026-17615 actively exploited?

Active exploitation of CVE-2026-17615 has not been confirmed. Its EPSS score was 0.3% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-17615?

CVE-2026-17615 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2026-17615 affecting your environment?

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