A flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a WebApplicationException is not handled by an application exception mapper, RESTEasy returns the exception's localized message in the HTTP 500 response body. A remote unauthenticated attacker who can trigger such an exception may obtain information contained in that message. The behavior was reproduced with RESTEasy 7.0.2.Final.

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History

Tue, 03 Nov 2026 05:45:00 +0000

Type Values Removed Values Added
Description RESTEasy's default exception mapper returns an exception's localized message in the HTTP 500 response body when no application exception mapper handles an unhandled exception other than a WebApplicationException. A remote unauthenticated client who can trigger such an exception may receive information included in the message. Fabio Burzigotti reports reproducing the behavior with RESTEasy 7.0.2.Final. The complete affected and fixed version ranges remain to be confirmed. A flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a WebApplicationException is not handled by an application exception mapper, RESTEasy returns the exception's localized message in the HTTP 500 response body. A remote unauthenticated attacker who can trigger such an exception may obtain information contained in that message. The behavior was reproduced with RESTEasy 7.0.2.Final.

Tue, 03 Nov 2026 04:30:00 +0000

Type Values Removed Values Added
Description RESTEasy's default exception mapper returns an exception's localized message in the HTTP 500 response body when no application exception mapper handles an unhandled exception other than a WebApplicationException. A remote unauthenticated client who can trigger such an exception may receive information included in the message. Fabio Burzigotti reports reproducing the behavior with RESTEasy 7.0.2.Final. The complete affected and fixed version ranges remain to be confirmed.
Title Org.jboss.resteasy/resteasy-core: resteasy: information disclosure through default exception mapper responses
First Time appeared Redhat
Redhat apicurio Registry
Redhat build Keycloak
Redhat camel Quarkus
Redhat debezium
Redhat jboss Enterprise Application Platform
Redhat jboss Fuse
Redhat jbosseapxp
Redhat quarkus
Redhat satellite
Weaknesses CWE-209
CPEs cpe:/a:redhat:apicurio_registry:3
cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:camel_quarkus:3
cpe:/a:redhat:debezium:3
cpe:/a:redhat:jboss_enterprise_application_platform:8
cpe:/a:redhat:jboss_fuse:7
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:quarkus:3
cpe:/a:redhat:satellite:6
Vendors & Products Redhat
Redhat apicurio Registry
Redhat build Keycloak
Redhat camel Quarkus
Redhat debezium
Redhat jboss Enterprise Application Platform
Redhat jboss Fuse
Redhat jbosseapxp
Redhat quarkus
Redhat satellite
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-03T05:34:40.879Z

Reserved: 2026-11-03T04:01:17.695Z

Link: CVE-2026-120971

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-03T05:18:34.670

Modified: 2026-11-03T06:17:37.883

Link: CVE-2026-120971

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T06:30:09Z

Weaknesses