Is there a public exploit for CVE-2026-93558?

No public exploit for CVE-2026-93558 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-93558?

CVE-2026-93558 scores CVSS 7.5 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 1.08%.

What does CVE-2026-93558 affect?

CVE-2026-93558 affects Red Hat Red Hat build of Keycloak 26.4, Red Hat Build of Apache Camel 3.33.3.SP2.

7.5 High

A flaw was found in Netty's WebSocketServerExtensionHandler.

CVE-2026-93558

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.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
EPSS: 1.08% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 18 September 2026
Last updated: 6 November 2026
Affected: Red Hat · Red Hat Build of Apache Camel 3.33.3.SP2 · Red Hat build of Keycloak 26.4
Assigner: redhat

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

At the source

EUVD (ENISA)

References

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