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Vendor Workaround
Option 1 — Server-wide configuration to disable websockets handshake: <!-- Remove <websockets/> from standalone.xml servlet-container --> <servlet-container name="default"> <jsp-config/> <!-- <websockets/> ← remove this line entirely --> </servlet-container> isWebsocketsEnabled() returns false → no WebSocket upgrade accepted for any deployment. Option 2 — Per-application configuration to disable websockets handshake: <!-- WEB-INF/jboss-web.xml inside the WAR --> <jboss-web> <enable-websockets>false</enable-websockets> </jboss-web> Only that specific WAR's @ServerEndpoint classes are not registered.
Tracking
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Tue, 11 Aug 2026 18:30:00 +0000
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ssvc
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Tue, 11 Aug 2026 15:45:00 +0000
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| First Time appeared |
Redhat build Of Apache Camel For Spring Boot
Redhat data Grid 8 Redhat fuse Redhat jboss Enterprise Application Platform Expansion Pack Redhat single Sign On Redhat undertow |
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| Vendors & Products |
Redhat build Of Apache Camel For Spring Boot
Redhat data Grid 8 Redhat fuse Redhat jboss Enterprise Application Platform Expansion Pack Redhat single Sign On Redhat undertow |
Tue, 11 Aug 2026 12:15:00 +0000
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threat_severity
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threat_severity
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Tue, 11 Aug 2026 09:15:00 +0000
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| Description | 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. | |
| Title | Undertow: undertow-websockets: undertow: pre-auth dos on websocket endpoint with @serverendpoint class with any @onmessage method | |
| First Time appeared |
Redhat
Redhat camel Spring Boot Redhat jboss Data Grid Redhat jboss Enterprise Application Platform Redhat jboss Fuse Redhat jbosseapxp Redhat red Hat Single Sign On |
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| Weaknesses | CWE-120 | |
| CPEs | cpe:/a:redhat:camel_spring_boot:4 cpe:/a:redhat:jboss_data_grid:8 cpe:/a:redhat:jboss_enterprise_application_platform:7 cpe:/a:redhat:jboss_enterprise_application_platform:8 cpe:/a:redhat:jboss_fuse:7 cpe:/a:redhat:jbosseapxp cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat camel Spring Boot Redhat jboss Data Grid Redhat jboss Enterprise Application Platform Redhat jboss Fuse Redhat jbosseapxp Redhat red Hat Single Sign On |
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| References |
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| Metrics |
cvssV3_1
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Subscriptions
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-08-11T17:51:04.542Z
Reserved: 2026-07-13T05:42:33.770Z
Link: CVE-2026-15565
Updated: 2026-08-11T17:48:47.692Z
Status : Received
Published: 2026-08-11T09:17:13.370
Modified: 2026-08-11T18:17:20.980
Link: CVE-2026-15565
OpenCVE Enrichment
Updated: 2026-08-11T14:19:48Z
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CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')