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        "state": "PUBLISHED",
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        "dateReserved": "2026-07-13T05:42:33.770Z",
        "datePublished": "2026-08-11T08:49:58.552Z",
        "dateUpdated": "2026-08-24T11:38:38.518Z"
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            "title": "Undertow: undertow-websockets: undertow: pre-auth dos on websocket endpoint with @serverendpoint class with any @onmessage method",
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                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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                    "lang": "en",
                    "value": "A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket handshake."
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                    "product": "Red Hat build of Apache Camel for Spring Boot 4",
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                    "url": "https://access.redhat.com/errata/RHSA-2026:53806",
                    "name": "RHSA-2026:53806",
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                            "cweId": "CWE-120",
                            "description": "Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')",
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                    "lang": "en",
                    "value": "Option 1 — Server-wide configuration to disable websockets handshake:\n  <!-- Remove <websockets/> from standalone.xml servlet-container -->\n  <servlet-container name=\"default\">\n      <jsp-config/>\n      <!-- <websockets/>  ← remove this line entirely -->\n  </servlet-container>\n  isWebsocketsEnabled() returns false → no WebSocket upgrade accepted for any deployment.\n\nOption 2 — Per-application configuration to disable websockets handshake:\n  <!-- WEB-INF/jboss-web.xml inside the WAR -->\n  <jboss-web>\n      <enable-websockets>false</enable-websockets>\n  </jboss-web>\n  Only that specific WAR's @ServerEndpoint classes are not registered."
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                    "lang": "en",
                    "time": "2026-06-19T00:58:08.395Z",
                    "value": "Reported to Red Hat."
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                    "time": "2026-08-11T05:55:42.770Z",
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