ghsa-8v4x-mgvp-p658
CVSS 8.7 osv_maven
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.
Timeline
- Published
- unknown
- Last Modified
- unknown
CVSS Details
CVSS details not available.
Affected Products
No product information available.
Weaknesses (CWE)
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-28368
- https://github.com/undertow-io/undertow/commit/3ece0bf2b2cf5e01db8ca25e41b831e66d3f5961
- https://github.com/undertow-io/undertow/commit/904e26f1be62fb00b440538608a9574839821878
- https://github.com/undertow-io/undertow/commit/c5dc41479e9c3576552d7e98e31bb1c237ae155e
- https://access.redhat.com/errata/RHSA-2026:25125
- https://access.redhat.com/errata/RHSA-2026:25126
- https://access.redhat.com/security/cve/CVE-2026-28368
- https://bugzilla.redhat.com/show_bug.cgi?id=2443261
- https://github.com/undertow-io/undertow
Linked Vulnerabilities
No linked vulnerabilities found.
{
"affected": [
{
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},
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{
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},
"package": {
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"name": "io.undertow:undertow-core",
"purl": "pkg:maven/io.undertow/undertow-core"
},
"ranges": [
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},
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],
"aliases": [
"CVE-2026-28368"
],
"database_specific": {
"cwe_ids": [
"CWE-444"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-31T23:14:15Z",
"nvd_published_at": "2026-03-27T17:16:27Z",
"severity": "HIGH"
},
"details": "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.",
"id": "GHSA-8v4x-mgvp-p658",
"modified": "2026-11-04T21:30:07.225007634Z",
"published": "2026-03-27T18:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28368"
},
{
"type": "WEB",
"url": "https://github.com/undertow-io/undertow/commit/3ece0bf2b2cf5e01db8ca25e41b831e66d3f5961"
},
{
"type": "WEB",
"url": "https://github.com/undertow-io/undertow/commit/904e26f1be62fb00b440538608a9574839821878"
},
{
"type": "WEB",
"url": "https://github.com/undertow-io/undertow/commit/c5dc41479e9c3576552d7e98e31bb1c237ae155e"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:25125"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:25126"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-28368"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2443261"
},
{
"type": "PACKAGE",
"url": "https://github.com/undertow-io/undertow"
}
],
"schema_version": "1.9.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Undertow is Vulnerable to HTTP Request/Response Smuggling"
}