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CVE-2026-15565 Undertow: undertow-websockets: undertow: pre-auth dos on websocket endpoint with @serverendpoint class with any @onmessage method

🗓️ 11 Aug 2026 08:49:58Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 9 Views

Unauthenticated DoS in Undertow WebSocket endpoint via @ServerEndpoint @OnMessage causes OOM.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-15565
11 Aug 202608:49
attackerkb
circl
Circl
CVE-2026-15565
11 Aug 202609:30
circl
cve
CVE
CVE-2026-15565
11 Aug 202608:49
cve
euvd
EUVD
EUVD-2026-55988
11 Aug 202608:49
euvd
nvd
NVD
CVE-2026-15565
11 Aug 202609:17
nvd
redhatcve
RedhatCVE
CVE-2026-15565
11 Aug 202608:49
redhatcve
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Apache Camel for Spring Boot 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:camel_spring_boot:4"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Data Grid 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:jboss_data_grid:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Fuse 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/a:redhat:jboss_fuse:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform 7",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform 8",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Single Sign-On 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "undertow-websockets-jsr",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ]
  }
]

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