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VULNERABILITIES

CVE-2026-93558 Details

Description

A flaw was found in Netty's WebSocketServerExtensionHandler. A remote, unauthenticated attacker can exploit this vulnerability by using HTTP/1.1 pipelining to send requests faster than the application can respond. This leads to an unbounded growth of a per-connection queue, consuming excessive memory. Eventually, this can cause the Java Virtual Machine (JVM) to exhaust its heap, resulting in a Denial of Service (DoS) for the affected server.

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://bugzilla.redhat.com/show_bug.cgi?id=2536932 CISA-ADP
https://access.redhat.com/errata/RHSA-2026:69440 [email protected]
https://access.redhat.com/errata/RHSA-2026:69470 [email protected]
https://access.redhat.com/errata/RHSA-2026:70257 [email protected]
https://access.redhat.com/security/cve/CVE-2026-93558 [email protected]

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1035OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities[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-2026-93558
NVD Published Date:
Sep 18, 2026
NVD Last Modified:
Sep 22, 2026
Source:
[email protected]
CVE-2026-93558 Details - Not Deferred