MediumFix available
libpod, rootlesskit — security advisory
Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.
- Products
- libpod, rootlesskit
- Affected versions
- Not specified
- Fixed versions
- 0.12.0-1, 3.0.0~rc2+dfsg1-2
- CVEs
- CVE-2021-20199
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 01:40 UTC · Revision 1
Source evidence
Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.
osv:DEBIAN-CVE-2021-20199
libpod
Fixed versions: 3.0.0~rc2+dfsg1-2
rootlesskit
Fixed versions: 0.12.0-1
rootlesskit
Fixed versions: 0.12.0-1
rootlesskit
Fixed versions: 0.12.0-1
Complete source record
{
"id": "32a8ed3cabb938c09fc976cdea8aef269fba7799630e0ff21410918c9852b89b",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-20199",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-20199",
"summary": "Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.",
"evidence": "osv:DEBIAN-CVE-2021-20199",
"products": [
{
"name": {
"value": "libpod",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.0~rc2+dfsg1-2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rootlesskit",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.12.0-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rootlesskit",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.12.0-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rootlesskit",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.12.0-1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2021-20199",
"aliases": [
"DEBIAN-CVE-2021-20199"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.0~rc2+dfsg1-2"
}
]
}
],
"package": {
"name": "libpod",
"purl": "pkg:deb/debian/libpod?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.12.0-1"
}
]
}
],
"package": {
"name": "rootlesskit",
"purl": "pkg:deb/debian/rootlesskit?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.12.0-1"
}
]
}
],
"package": {
"name": "rootlesskit",
"purl": "pkg:deb/debian/rootlesskit?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.12.0-1"
}
]
}
],
"package": {
"name": "rootlesskit",
"purl": "pkg:deb/debian/rootlesskit?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:04:49.159151850Z",
"provider": "osv",
"upstream": [
"CVE-2021-20199"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-20199"
]
},
"related_cves": [
{
"value": "CVE-2021-20199",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 423964,
"published_at": "2021-02-02T19:15:14+00:00"
}