Undertow vulnerable to denial of service
A flaw was found in undertow. Servlets annotated with @MultipartConfig may cause an OutOfMemoryError due to large multipart content. This may allow unauthorized users to cause remote Denial of Service (DoS) attack. If the server uses fileSizeThreshold to limit the file size, it's possible to bypass the limit by setting the file name in the request to null.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | io.undertow:undertow-parent | < 2.2.24.Final | 2.2.24.Final |
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-3223
- https://access.redhat.com/errata/RHSA-2023:4505
- https://access.redhat.com/errata/RHSA-2023:4506
- https://access.redhat.com/errata/RHSA-2023:4507
- https://access.redhat.com/errata/RHSA-2023:4509
- https://access.redhat.com/errata/RHSA-2023:4918
- https://access.redhat.com/errata/RHSA-2023:4919
- https://access.redhat.com/errata/RHSA-2023:4920
- https://access.redhat.com/errata/RHSA-2023:4921
- https://access.redhat.com/errata/RHSA-2023:4924
- https://access.redhat.com/errata/RHSA-2023:7247
- https://access.redhat.com/security/cve/CVE-2023-3223
- https://bugzilla.redhat.com/show_bug.cgi?id=2209689
- https://github.com/undertow-io/undertow
- https://security.netapp.com/advisory/ntap-20231027-0004
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-400, CWE-789- Platform
- Java / Kotlin (Maven)
- Package
io.undertow:undertow-parent- Disclosed
- 27.09.2023
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-65h2-wf7m-q2v8 - CC BY 4.0
Vulnerability history: io.undertow:undertow-parent
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 09.2023 03.2026
- Without a fix
- 3
- Exploited in attacks
- 0
Severity breakdown
- High 4
Disclosures per year
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 3
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Undertow vulnerable to denial of service this entry
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