HighFix available
nats-server — security advisory
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.
- Products
- nats-server
- Affected versions
- 2.10.1-1, 2.10.16-1, 2.10.18-1, 2.10.24-1, 2.10.27-1, 2.10.3-1, 2.10.4-1, 2.10.7-1, 2.12.4-1, 2.12.6-1, 2.14.1-1, 2.14.3-1, 2.14.6-1, 2.15.1-1, 2.9.10-1, 2.9.19-1
- Fixed versions
- 2.14.1-1
- CVEs
- CVE-2026-58213
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:35 UTC · Revision 2
Source evidence
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.
osv:DEBIAN-CVE-2026-58213
nats-server
Fixed versions: Not specified
nats-server
Fixed versions: Not specified
nats-server
Fixed versions: 2.14.1-1
Complete source record
{
"id": "72c4dfe0e89f4bccc0c43cae95b49d5dcc5f98a23478e56d628df94026d7e6d2",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-58213",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-58213",
"summary": "NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.",
"evidence": "osv:DEBIAN-CVE-2026-58213",
"products": [
{
"name": {
"value": "nats-server",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.10.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.16-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.18-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.24-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.27-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.9.10-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.9.19-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "nats-server",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.10.27-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.14.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.14.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.14.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.15.1-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "nats-server",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.14.1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "2.10.27-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.12.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.12.6-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-58213",
"aliases": [
"DEBIAN-CVE-2026-58213"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nats-server",
"purl": "pkg:deb/debian/nats-server?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.10.1-1",
"2.10.16-1",
"2.10.18-1",
"2.10.24-1",
"2.10.27-1",
"2.10.3-1",
"2.10.4-1",
"2.10.7-1",
"2.12.4-1",
"2.12.6-1",
"2.14.1-1",
"2.14.3-1",
"2.14.6-1",
"2.15.1-1",
"2.9.10-1",
"2.9.19-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58213.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nats-server",
"purl": "pkg:deb/debian/nats-server?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.10.27-1",
"2.12.4-1",
"2.12.6-1",
"2.14.1-1",
"2.14.3-1",
"2.14.6-1",
"2.15.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58213.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.14.1-1"
}
]
}
],
"package": {
"name": "nats-server",
"purl": "pkg:deb/debian/nats-server?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.10.27-1",
"2.12.4-1",
"2.12.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58213.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:38.514411161Z",
"provider": "osv",
"upstream": [
"CVE-2026-58213"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-58213"
]
},
"related_cves": [
{
"value": "CVE-2026-58213",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452578,
"published_at": "2026-07-08T20:16:54.18+00:00"
}