CVE-2024-4027
Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Timeline
ID reserved
By redhat
- 22 months later
· 22 months later
Published
- 9 months later
· 9 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| redhat-SADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
Red Hat · Red Hat build of Apicurio Registry 2
All versions: affected
Red Hat · Red Hat build of Quarkus
All versions: unaffected
Red Hat · Red Hat build of Quarkus
All versions: unaffected
All versions: unaffected
All versions: affected
Red Hat · Red Hat Integration Camel K 1
All versions: affected
Red Hat · Red Hat JBoss Enterprise Application Platform 7
All versions: unaffected
Red Hat · Red Hat JBoss Enterprise Application Platform 8
All versions: unaffected
Red Hat · Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions: unaffected
Red Hat · Red Hat Process Automation 7
All versions: affected
Red Hat · Red Hat Single Sign-On 7
All versions: unaffected
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenio.undertow:undertow-coreGHSA-33hj-rcmx-86mv (opens in a new tab)
What to do
Workaround: Currently no mitigation is available for this vulnerability. Please make sure to perform the update as they become available.
References (3)
- https://access.redhat.com/security/cve/CVE-2024-4027 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2276410 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-4027.json (opens in a new tab)x_sadp-csaf-vex
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-33hj-rcmx-86mv (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-4027)Record last updated .