Medium
jetty12, jetty9 — security advisory
In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present). This was not enforced in earlier HTTP RFC (for example, in RFC 2616), but it is in the latest RFC (9110 and 9112). This mismatch can cause a number of problems that may be classified as vulnerabilities such as: * URI constructions (for example, for redirects -- this is typical for login pages) * Virtual host selection * Reverse proxying * Misleading logs * Etc. Given that the latest RFCs require that request authority and Host header must match, Jetty should enforce this invariant.
- Products
- jetty12, jetty9
- Affected versions
- 12.0.17-3.1, 12.0.32-1, 9.2.14-1, 9.2.22-2, 9.2.22-3, 9.2.23-1, 9.4.15-1~18.04.1ubuntu1, 9.4.18-2build2, 9.4.26-1, 9.4.39-3, 9.4.44-2, 9.4.44-3, 9.4.44-4, 9.4.45-1, 9.4.51-2, 9.4.53-1, 9.4.57-1, 9.4.57-1.1, 9.4.58-1, 9.4.58-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-6790
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:14 UTC · Revision 1
Source evidence
In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present). This was not enforced in earlier HTTP RFC (for example, in RFC 2616), but it is in the latest RFC (9110 and 9112). This mismatch can cause a number of problems that may be classified as vulnerabilities such as: * URI constructions (for example, for redirects -- this is typical for login pages) * Virtual host selection * Reverse proxying * Misleading logs * Etc. Given that the latest RFCs require that request authority and Host header must match, Jetty should enforce this invariant.
osv:UBUNTU-CVE-2026-6790
jetty9
Fixed versions: Not specified
jetty9
Fixed versions: Not specified
jetty9
Fixed versions: Not specified
jetty9
Fixed versions: Not specified
jetty9
Fixed versions: Not specified
jetty12
Fixed versions: Not specified
jetty9
Fixed versions: Not specified
jetty12
Fixed versions: Not specified
jetty9
Fixed versions: Not specified
Complete source record
{
"id": "129872bdc1f2e8f785f6442e74f1c24a9170d4fc6657a10d466ea7cb60088c70",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-6790",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-6790",
"summary": "In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present). This was not enforced in earlier HTTP RFC (for example, in RFC 2616), but it is in the latest RFC (9110 and 9112). This mismatch can cause a number of problems that may be classified as vulnerabilities such as: * URI constructions (for example, for redirects -- this is typical for login pages) * Virtual host selection * Reverse proxying * Misleading logs * Etc. Given that the latest RFCs require that request authority and Host header must match, Jetty should enforce this invariant.",
"evidence": "osv:UBUNTU-CVE-2026-6790",
"products": [
{
"name": {
"value": "jetty9",
"evidence": "/affected/0/package/name"
},
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"affected_versions": [
{
"value": "9.2.14-1",
"evidence": "/affected/0/versions"
}
]
},
{
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{
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{
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{
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{
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"affected_versions": [
{
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"evidence": "/affected/6/versions"
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{
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"evidence": "/affected/6/versions"
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},
{
"name": {
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"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "12.0.17-3.1",
"evidence": "/affected/7/versions"
},
{
"value": "12.0.32-1",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "jetty9",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "9.4.57-1",
"evidence": "/affected/8/versions"
},
{
"value": "9.4.57-1.1",
"evidence": "/affected/8/versions"
},
{
"value": "9.4.58-1",
"evidence": "/affected/8/versions"
}
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],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-6790",
"aliases": [
"UBUNTU-CVE-2026-6790"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
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"events": [
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]
}
],
"package": {
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"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"9.2.14-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6790.json"
},
"ecosystem_specific": {
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},
{
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},
{
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"package": {
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"purl": "pkg:deb/ubuntu/jetty9?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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"9.2.22-3",
"9.2.23-1",
"9.4.15-1~18.04.1ubuntu1"
],
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6790.json"
},
"ecosystem_specific": {
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},
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"ecosystem": "Ubuntu:22.04:LTS"
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"9.4.44-2",
"9.4.44-3",
"9.4.44-4",
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],
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},
"ecosystem_specific": {
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},
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},
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],
"modified": "2026-10-17T13:00:40.440910173Z",
"provider": "osv",
"upstream": [
"CVE-2026-6790"
],
"references": [
"https://ubuntu.com/security/CVE-2026-6790",
"https://www.cve.org/CVERecord?id=CVE-2026-6790",
"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/99"
]
},
"related_cves": [
{
"value": "CVE-2026-6790",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360775,
"published_at": "2026-07-14T09:16:00+00:00"
}