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).

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-87742
https://bugzilla.redhat.com/show_bug.cgi?id=2530522

Configurations

No configuration.

History

17 Sep 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 15:16

Updated : 2026-09-17 16:18

NVD link : CVE-2026-87742

Mitre link : CVE-2026-87742

CVE.ORG link : CVE-2026-87742

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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