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VULNERABILITIES

CVE-2026-87742 Details

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).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:69440 [email protected]
https://access.redhat.com/errata/RHSA-2026:69470 [email protected]
https://access.redhat.com/security/cve/CVE-2026-87742 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2530522 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-770Allocation of Resources Without Limits or Throttling[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-87742
NVD Published Date:
Sep 17, 2026
NVD Last Modified:
Sep 22, 2026
Source:
[email protected]
CVE-2026-87742 Details - Not Deferred