A flaw was found in quarkus-websockets-next. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by streaming messages over a single connection faster than the application can process them. Due to unbounded message buffering and a lack of read backpressure, this rapidly exhausts heap space, leading to a java.lang.OutOfMemoryError that crashes the Java Virtual Machine (JVM).
Metrics
Affected Vendors & Products
References
History
Fri, 09 Oct 2026 16:00:00 +0000
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| First Time appeared |
Redhat quarkus
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| CPEs | cpe:/a:redhat:quarkus:3.27::el8 cpe:/a:redhat:quarkus:3.33::el8 |
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| Vendors & Products |
Redhat quarkus
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Tue, 22 Sep 2026 15:00:00 +0000
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Mon, 21 Sep 2026 17:00:00 +0000
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| Vendors & Products |
Redhat quarkus
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| References |
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Fri, 18 Sep 2026 21:30:00 +0000
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| First Time appeared |
Redhat build Of Quarkus
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| Vendors & Products |
Redhat build Of Quarkus
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Fri, 18 Sep 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Thu, 17 Sep 2026 16:30:00 +0000
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ssvc
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Thu, 17 Sep 2026 15:15:00 +0000
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| Description | A flaw was found in quarkus-websockets-next. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by streaming messages over a single connection faster than the application can process them. Due to unbounded message buffering and a lack of read backpressure, this rapidly exhausts heap space, leading to a java.lang.OutOfMemoryError that crashes the Java Virtual Machine (JVM). | |
| Title | Quarkus-websockets-next: denial of service (oom) in quarkus-websockets-next via unbounded message buffering | |
| First Time appeared |
Redhat
Redhat enterprise Linux Ai Redhat exploit Intelligence Redhat quarkus |
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| Weaknesses | CWE-770 | |
| CPEs | cpe:/a:redhat:enterprise_linux_ai:3 cpe:/a:redhat:exploit_intelligence:0 cpe:/a:redhat:quarkus:3 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Ai Redhat exploit Intelligence Redhat quarkus |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-09-17T14:57:44.414Z
Updated: 2026-10-09T15:37:02.180Z
Reserved: 2026-09-09T05:58:00.263Z
Link: CVE-2026-87742
Updated: 2026-09-17T15:19:14.295Z
Status : Awaiting Analysis
Published: 2026-09-17T15:16:56.137
Modified: 2026-10-09T16:17:31.303
Link: CVE-2026-87742