jetty9 — security advisory
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.
- Products
- jetty9
- Affected versions
- Not specified
- Fixed versions
- 9.4.38-1
- CVEs
- CVE-2020-27223
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:45 UTC · Revision 1
Source evidence
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.
osv:DEBIAN-CVE-2020-27223
jetty9
Fixed versions: 9.4.38-1
jetty9
Fixed versions: 9.4.38-1
jetty9
Fixed versions: 9.4.38-1
Complete source record
{
"id": "4602d206da470344a38723c9bbd16f227ec255901db758bdabc732ab0d53dcf1",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-27223",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-27223",
"summary": "In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.",
"evidence": "osv:DEBIAN-CVE-2020-27223",
"products": [
{
"name": {
"value": "jetty9",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.4.38-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "jetty9",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.4.38-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "jetty9",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.4.38-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2020-27223",
"aliases": [
"DEBIAN-CVE-2020-27223"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.38-1"
}
]
}
],
"package": {
"name": "jetty9",
"purl": "pkg:deb/debian/jetty9?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27223.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.38-1"
}
]
}
],
"package": {
"name": "jetty9",
"purl": "pkg:deb/debian/jetty9?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27223.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.38-1"
}
]
}
],
"package": {
"name": "jetty9",
"purl": "pkg:deb/debian/jetty9?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27223.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:41.653878027Z",
"provider": "osv",
"upstream": [
"CVE-2020-27223"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-27223"
]
},
"related_cves": [
{
"value": "CVE-2020-27223",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452780,
"published_at": "2021-02-26T22:15:19.317+00:00"
}