LowFix available
jetty9 — security advisory
In Eclipse Jetty 9.4.32 to 9.4.38, 10.0.0.beta2 to 10.0.1, and 11.0.0.beta2 to 11.0.1, if a user uses a webapps directory that is a symlink, the contents of the webapps directory is deployed as a static webapp, inadvertently serving the webapps themselves and anything else that might be in that directory.
- Products
- jetty9
- Affected versions
- Not specified
- Fixed versions
- 9.4.39-1
- CVEs
- CVE-2021-28163
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 01:41 UTC · Revision 1
Source evidence
In Eclipse Jetty 9.4.32 to 9.4.38, 10.0.0.beta2 to 10.0.1, and 11.0.0.beta2 to 11.0.1, if a user uses a webapps directory that is a symlink, the contents of the webapps directory is deployed as a static webapp, inadvertently serving the webapps themselves and anything else that might be in that directory.
osv:DEBIAN-CVE-2021-28163
jetty9
Fixed versions: 9.4.39-1
jetty9
Fixed versions: 9.4.39-1
jetty9
Fixed versions: 9.4.39-1
Complete source record
{
"id": "7a6fc2ed6f080b6ffbd83ab3af17a8b35b59d526c86058c51ffbda75d7ac400a",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-28163",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-28163",
"summary": "In Eclipse Jetty 9.4.32 to 9.4.38, 10.0.0.beta2 to 10.0.1, and 11.0.0.beta2 to 11.0.1, if a user uses a webapps directory that is a symlink, the contents of the webapps directory is deployed as a static webapp, inadvertently serving the webapps themselves and anything else that might be in that directory.",
"evidence": "osv:DEBIAN-CVE-2021-28163",
"products": [
{
"name": {
"value": "jetty9",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.4.39-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "jetty9",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.4.39-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "jetty9",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.4.39-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "low",
"structured": {
"id": "DEBIAN-CVE-2021-28163",
"aliases": [
"DEBIAN-CVE-2021-28163"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.39-1"
}
]
}
],
"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-2021-28163.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.39-1"
}
]
}
],
"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-2021-28163.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.39-1"
}
]
}
],
"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-2021-28163.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:04:49.719312370Z",
"provider": "osv",
"upstream": [
"CVE-2021-28163"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-28163"
]
},
"related_cves": [
{
"value": "CVE-2021-28163",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 424001,
"published_at": "2021-04-01T15:15:14.08+00:00"
}