GHSA-8v4x-mgvp-p658
Undertow is Vulnerable to HTTP Request/Response Smuggling
At a glance
- Published
- Updated
- CVE
- CVE-2026-28368
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Description
A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.
Affected packages
| Package | Versions |
|---|---|
| Maven · io.undertow:undertow-parent | introduced 0, last affected 2.3.23.Final |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-28368 ADVISORY
- https://access.redhat.com/errata/RHSA-2026:25125 WEB
- https://access.redhat.com/errata/RHSA-2026:25126 WEB
- https://access.redhat.com/security/cve/CVE-2026-28368 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2443261 WEB
- https://github.com/undertow-io/undertow PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |