Description
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.
Published: 2026-11-03
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Tue, 03 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


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'}


Subscriptions

Redhat Apicurio Registry Build Keycloak Camel Quarkus Debezium Jboss Enterprise Application Platform Jboss Fuse Jbosseapxp Quarkus Satellite
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-03T18:33:19.110Z

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

Severity : Moderate

Publid Date: 2026-11-03T00:00:00Z

Links: CVE-2026-120971 - Bugzilla

cve-icon OpenCVE Enrichment

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

Weaknesses
  • CWE-209

    Generation of Error Message Containing Sensitive Information