High 7.5Published Jan 30, 2026

CVE-2024-4027Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks

Updated under an hour ago (Oct 26, 2026, 9:40 AM ET)

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It affects Red Hat build of Apicurio Registry 2 and 8 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat build of Apicurio Registry 2

Exploited in the last 30 days

A flaw was found in Undertow. Servlets using a method that calls HttpServletRequestImpl.getParameterNames() can cause an OutOfMemoryError when the client sends a request with large parameter names. This issue can be exploited by an unauthorized user to cause a remote denial-of-service (DoS) attack.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Deferred
Record last updated: Sep 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat build of Apicurio Registry 2 redhat:service_registry	2	CNA record
Red Hat Red Hat build of Quarkus redhat:quarkus	2	CNA record
Red Hat Red Hat Data Grid 8 redhat:jboss_data_grid	8	CNA record
Red Hat Red Hat Fuse 7 redhat:jboss_fuse	7	CNA record
Red Hat Red Hat Integration Camel K 1 redhat:integration	1	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform 7 redhat:jboss_enterprise_application_platform	7	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	Versions not stated	CNA record
Red Hat Red Hat Process Automation 7 redhat:jboss_enterprise_bpms_platform	7	CNA record
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on	7	CNA record
Red Hat Red Hat build of Apicurio Registry 2 redhat:service_registry	2	CISA ADP
Red Hat Red Hat build of Quarkus redhat:quarkus	2	CISA ADP
Red Hat Red Hat Data Grid 8 redhat:jboss_data_grid	8	CISA ADP
Red Hat Red Hat Fuse 7 redhat:jboss_fuse	7	CISA ADP
Red Hat Red Hat Integration Camel K 1 redhat:integration	1	CISA ADP
Red Hat Red Hat JBoss Enterprise Application Platform 7 redhat:jboss_enterprise_application_platform	7	CISA ADP
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	Versions not stated	CISA ADP
Red Hat Red Hat Process Automation 7 redhat:jboss_enterprise_bpms_platform	7	CISA ADP
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on	7	CISA ADP

References

https://access.redhat.com/security/cve/CVE-2024-4027vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2276410issue-tracking, x-refsource-redhat
https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-4027.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.