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Vulnerability · Published Aug 31, 2026 · Assigned by redhat

CVE-2026-17615Resteasy-core: resteasy sourceprovider remote unauthenticated file read

High 7.5

In plain English

A high-severity XML external entity in Red Hat Build of Apache Camel 3.33.3.SP1 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 42.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9pki-resteasy-client3.0.26-20.el9_8ALSA-2026:72424
AlmaLinux:9pki-resteasy-core3.0.26-20.el9_8ALSA-2026:72424
AlmaLinux:9pki-resteasy-jackson2-provider3.0.26-20.el9_8ALSA-2026:72424
AlmaLinux:9pki-resteasy-servlet-initializer3.0.26-20.el9_8ALSA-2026:72424
Debian:12resteasy3.0no fix listedDEBIAN-CVE-2026-17615
Debian:13resteasy3.0no fix listedDEBIAN-CVE-2026-17615
Debian:14resteasy3.0no fix listedDEBIAN-CVE-2026-17615
Rocky Linux:9resteasy0:3.0.26-20.el9_8RLSA-2026:72424
Ubuntu:26.04:LTSresteasyno fix listedUBUNTU-CVE-2026-17615
Ubuntu:26.10resteasyno fix listedUBUNTU-CVE-2026-17615
Ubuntu:22.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-17615
Ubuntu:24.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-17615
Ubuntu:26.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-17615
Ubuntu:26.10resteasy3.0no fix listedUBUNTU-CVE-2026-17615

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Build of Apache Camel 3.33.3.SP1 see references
Red Hat Red Hat build of Keycloak 26.6 see references
Red Hat Red Hat build of Keycloak 26.6 see references
Red Hat Red Hat build of Keycloak 26.6 see references
Red Hat Red Hat build of Keycloak 26.6.7 see references
Red Hat Red Hat build of Keycloak 26.6.7 see references
Red Hat Red Hat build of Keycloak 26.6.7 see references
Red Hat Red Hat build of Keycloak 26.6.7 see references
Red Hat Red Hat build of Keycloak 26.6.7 see references
Red Hat Red Hat build of Quarkus 3.27.5.SP1 see references
Red Hat Red Hat build of Quarkus 3.33.3.SP1 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 see references
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 see references
Red Hat Red Hat build of Apicurio Registry 3 see references
Red Hat Red Hat build of Debezium 3 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Fuse 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references
Red Hat Red Hat Satellite 6 see references

Weakness: CWE-611 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References