CVE-2026-17615
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 SAXParser without disabling external entity resolution, leading to an XML External Entity (XXE) vulnerability.
How to fix
- access.redhat.com/errata/RHSA-2026:62515
- access.redhat.com/errata/RHSA-2026:62555
- access.redhat.com/errata/RHSA-2026:63302
- access.redhat.com/errata/RHSA-2026:68277
- access.redhat.com/errata/RHSA-2026:68278
- access.redhat.com/errata/RHSA-2026:72424
- access.redhat.com/errata/RHSA-2026:77297
- access.redhat.com/errata/RHSA-2026:80505
- access.redhat.com/errata/RHSA-2026:90894
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Red Hat Build of Apache Camel 3.33.3.SP1 | No range specified | — |
| build_keycloak 26.6 | No range specified | — |
| Red Hat Red Hat build of Quarkus 3.27.5.SP1 | No range specified | — |
| Red Hat Red Hat build of Quarkus 3.33.3.SP1 | No range specified | — |
| enterprise_linux 9 | No range specified | — |
| rhel_e4s 9.2 | No range specified | — |
| rhel_e4s 9.4 | No range specified | — |
| rhel_eus 9.6 | No range specified | — |
| Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 | No range specified | — |
| Red Hat Red Hat build of Apicurio Registry 3 | No range specified | — |
| Red Hat Red Hat build of Debezium 3 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 8 | No range specified | — |
| Red Hat Red Hat JBoss Enterprise Application Platform 8 | No range specified | — |
| Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack | No range specified | — |
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