CVE-2026-87742 — Quarkus-websockets-next: denial of service (oom) in quarkus-websockets-next via unbounded message buffering
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…
Published: 2026-09-17 · CVSS: 7.5 · CVSS 3.1
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).
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7