Resteasy-core: resteasy sourceprovider remote unauthenticated file read
Summary
| CVE | CVE-2026-17615 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-31 17:17:37 UTC |
| Updated | 2026-11-04 22:18:01 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.008180000 probability, percentile 0.572780000 (date 2026-11-04)
Problem Types: CWE-611 | CWE-611 Improper Restriction of XML External Entity Reference
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Build Of Apache Camel 3.33.3.SP1 | unaffected 6.2.16.Final-redhat-00003 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6 | unaffected 26.6.7-3 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6 | unaffected 26.6-20 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6 | unaffected 26.6-20 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6.7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6.7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6.7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6.7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.6.7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Quarkus 3.27.5.SP1 | unaffected 6.2.12.Final-redhat-00003 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Quarkus 3.33.3.SP1 | unaffected 6.2.16.Final-redhat-00003 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:3.0.26-20.el9_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:3.0.26-16.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions | unaffected 0:3.0.26-20.el9_4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:3.0.26-20.el9_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Apache Camel 4 For Quarkus 3 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Apicurio Registry 3 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Debezium 3 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Fuse 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat JBoss Enterprise Application Platform 8 | Not specified | Not specified |
| CNA | Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | Not specified | Not specified |
| CNA | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:90894 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:63302 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:62515 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:77297 | [email protected] | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-17615 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:62555 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:68278 | [email protected] | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| access.redhat.com/errata/RHSA-2026:80505 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:95221 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:68277 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:72424 | [email protected] | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Red Hat would like to thank Leon Zlobecki for reporting this issue. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-07-27T19:27:51.528Z | Reported to Red Hat. |
| CNA | 2026-08-31T00:00:00.000Z | Made public. |
Workarounds
CNA: To mitigate this issue, avoid exposing RESTEasy endpoints that return Source or StreamSource types. Alternatively, implement a custom MessageBodyWriter for Source types that explicitly applies XML security features to the SAXParserFactory before parsing. Changes to application configuration or code typically require an application redeployment or restart to take effect.
There are currently no legacy QID mappings associated with this CVE.