{"id":"CVE-2026-120971","aliases":["DEBIAN-CVE-2026-120971","EUVD-2026-115658","GHSA-q934-x6mh-3877","UBUNTU-CVE-2026-120971"],"status":"published","title":"Org.jboss.resteasy/resteasy-core: resteasy: information disclosure through default exception mapper responses","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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00343,"percentile":0.28243,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-209"],"published":"2026-11-03T04:16:03Z","modified":"2026-11-06T17:29:20Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"]},{"source":"osv","ecosystem":"Debian:13","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"]},{"source":"osv","ecosystem":"Debian:14","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"resteasy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.6-3","3.0.6-3ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.19-1","3.0.19-2","3.0.26-1~18.04","3.0.26-1~18.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"resteasy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-2ubuntu0.20.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-1","3.0.26-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-2","3.0.26-3","3.0.26-3ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"resteasy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-2ubuntu0.22.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6","3.0.26-6ubuntu0.24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"resteasy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-2ubuntu0.24.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"resteasy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"resteasy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-3","3.6.2-4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"resteasy3.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"]}],"products":[{"vendor":"red hat","product":"red hat build of apache camel 4 for quarkus 3"},{"vendor":"red hat","product":"red hat build of apicurio registry 3"},{"vendor":"red hat","product":"red hat build of debezium 3"},{"vendor":"red hat","product":"red hat build of keycloak"},{"vendor":"red hat","product":"red hat build of quarkus"},{"vendor":"red hat","product":"red hat fuse 7"},{"vendor":"red hat","product":"red hat jboss enterprise application platform 8"},{"vendor":"red hat","product":"red hat jboss enterprise application platform expansion pack"},{"vendor":"red hat","product":"red hat satellite 6"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-120971","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565584","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120971"},{"url":"https://github.com/advisories/GHSA-q934-x6mh-3877"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-120971","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-120971","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120971","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-120971","title":"Org.jboss.resteasy/resteasy-core: resteasy: information disclosure through default exception mapper responses","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.","status":"published","published":"2026-11-03T04:16:03.089Z","modified":"2026-11-03T18:33:19.11Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-209"],"updated_at":"2026-11-03T20:02:16.924578Z"}],"euvd":[{"id":"EUVD-2026-115658","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.","status":"published","published":"2026-11-03T04:16:03Z","modified":"2026-11-03T18:33:19Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T20:20:08.621391Z"}],"ghsa":[{"id":"GHSA-q934-x6mh-3877","title":"A flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a...","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.","status":"published","published":"2026-11-03T06:31:13Z","modified":"2026-11-03T06:31:20Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-209"],"updated_at":"2026-11-03T06:41:01.266412Z"}],"nvd":[{"id":"CVE-2026-120971","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.","status":"published","published":"2026-11-03T05:18:34.67Z","modified":"2026-11-03T19:18:01.02Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-209"],"updated_at":"2026-11-03T22:58:51.635286Z"}],"osv":[{"id":"DEBIAN-CVE-2026-120971","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.","status":"published","published":"2026-11-03T05:18:34.67Z","modified":"2026-11-06T17:29:20.268241458Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-06T18:00:26.717991Z"},{"id":"UBUNTU-CVE-2026-120971","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.","status":"published","published":"2026-11-03T05:18:00Z","modified":"2026-11-05T04:42:52Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-05T13:33:25.727744Z"}]}}