Vulnerability · Published Nov 3, 2026 · Assigned by redhat
CVE-2026-120971Org.jboss.resteasy/resteasy-core: resteasy: information disclosure through default exception mapper responses
Medium 5.3
In plain English
A medium-severity security flaw in Red Hat build of Apache Camel 4 for Quarkus 3 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 0.3% (higher than 28% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | resteasy3.0 | no fix listed | DEBIAN-CVE-2026-120971 |
| Debian:13 | resteasy3.0 | no fix listed | DEBIAN-CVE-2026-120971 |
| Debian:14 | resteasy3.0 | no fix listed | DEBIAN-CVE-2026-120971 |
| Ubuntu:26.04:LTS | resteasy | no fix listed | UBUNTU-CVE-2026-120971 |
| Ubuntu:26.10 | resteasy | no fix listed | UBUNTU-CVE-2026-120971 |
| Ubuntu:22.04:LTS | resteasy3.0 | no fix listed | UBUNTU-CVE-2026-120971 |
| Ubuntu:24.04:LTS | resteasy3.0 | no fix listed | UBUNTU-CVE-2026-120971 |
| Ubuntu:26.04:LTS | resteasy3.0 | no fix listed | UBUNTU-CVE-2026-120971 |
| Ubuntu:26.10 | resteasy3.0 | no fix listed | UBUNTU-CVE-2026-120971 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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 Build of Keycloak | see references |
| Red Hat | Red Hat build of Quarkus | 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-209 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://access.redhat.com/security/cve/CVE-2026-120971 vdb-entry, x_refsource_REDHAT
- RHBZ#2565584 issue-tracking, x_refsource_REDHAT