CVE-2026-87742
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).
- Published Sep 17, 2026
- CVSS 7.5 high
- 0.8% chance of exploitation in the next 30 days (EPSS)
- A fix is available