Vulnerability · Published Jan 30, 2026 · Assigned by redhat
CVE-2024-4027Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks
High 7.5
In plain English
A high-severity improper input validation in Red Hat build of Apicurio Registry 2 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | undertow | no fix listed | DEBIAN-CVE-2024-4027 |
| Maven | io.undertow:undertow-core | 2.4.0.Beta1 | GHSA-33hj-rcmx-86mv |
| Maven | io.undertow:undertow-core | 2.3.21.Final | GHSA-33hj-rcmx-86mv |
| Maven | io.undertow:undertow-core | 2.2.39.Final | GHSA-33hj-rcmx-86mv |
| Ubuntu:25.10 | undertow | no fix listed | UBUNTU-CVE-2024-4027 |
| Ubuntu:26.04:LTS | undertow | no fix listed | UBUNTU-CVE-2024-4027 |
| Ubuntu:26.10 | undertow | no fix listed | UBUNTU-CVE-2024-4027 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat build of Apicurio Registry 2 | see references |
| Red Hat | Red Hat build of Quarkus | see references |
| Red Hat | Red Hat build of Quarkus | see references |
| Red Hat | Red Hat Data Grid 8 | see references |
| Red Hat | Red Hat Fuse 7 | see references |
| Red Hat | Red Hat Integration Camel K 1 | see references |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | see references |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | see references |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | see references |
| Red Hat | Red Hat Process Automation 7 | see references |
| Red Hat | Red Hat Single Sign-On 7 | see references |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2024-4027 vdb-entry, x_refsource_REDHAT
- RHBZ#2276410 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-4027.json x_sadp-csaf-vex