{"id":"CVE-2026-120971","title":"Org.jboss.resteasy/resteasy-core: resteasy: information disclosure through default exception mapper responses","summary":"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 5…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-209"],"vendor":"Red Hat","product":"resteasy-core","affected":["resteasy-core (all versions)","resteasy-core (all versions)","resteasy-core (all versions)","resteasy-core (all versions)","resteasy-core (all versions)","resteasy-core","resteasy-core (all versions)","resteasy-core (all versions)","candlepin (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T17:52:20.970664Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T18:33:19.110Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120971","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-120971"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565584","label":"RHBZ#2565584"}],"tags":["cve.org"],"epss":0.00343,"epssPercentile":0.28027,"ingestedAt":"2026-11-05T20:33:06.369Z","slug":"CVE-2026-120971","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `resteasy-core (all versions)`\n- `resteasy-core (all versions)`\n- `resteasy-core (all versions)`\n- `resteasy-core (all versions)`\n- `resteasy-core (all versions)`\n- `resteasy-core`\n- `resteasy-core (all versions)`\n- `resteasy-core (all versions)`\n- `candlepin (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}