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DEBIAN-CVE-2026-58210

Type: advisorySource: OSV1 source record

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, an unauthenticated MQTT client could cause the server to retain large incomplete MQTT CONNECT packets before authentication completed, consuming server memory while the parser waited for the advertised MQTT packet length. This issue is fixed in versions 2.14.3 and 2.12.12.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-58210

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-58210

nats-server

Source reference: /affected/0/package/name

Affected versions
2.10.1-1

Source reference: /affected/0/versions

2.10.16-1

Source reference: /affected/0/versions

2.10.18-1

Source reference: /affected/0/versions

2.10.24-1

Source reference: /affected/0/versions

2.10.27-1

Source reference: /affected/0/versions

2.10.3-1

Source reference: /affected/0/versions

2.10.4-1

Source reference: /affected/0/versions

2.10.7-1

Source reference: /affected/0/versions

2.12.4-1

Source reference: /affected/0/versions

2.12.6-1

Source reference: /affected/0/versions

2.14.1-1

Source reference: /affected/0/versions

2.14.3-1

Source reference: /affected/0/versions

2.14.6-1

Source reference: /affected/0/versions

2.9.10-1

Source reference: /affected/0/versions

2.9.19-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

nats-server

Source reference: /affected/1/package/name

Affected versions
2.10.27-1

Source reference: /affected/1/versions

2.12.4-1

Source reference: /affected/1/versions

2.12.6-1

Source reference: /affected/1/versions

2.14.1-1

Source reference: /affected/1/versions

2.14.3-1

Source reference: /affected/1/versions

2.14.6-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

nats-server

Source reference: /affected/2/package/name

Affected versions
2.10.27-1

Source reference: /affected/2/versions

2.12.4-1

Source reference: /affected/2/versions

2.12.6-1

Source reference: /affected/2/versions

2.14.1-1

Source reference: /affected/2/versions

Fixed versions
2.14.3-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "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",
      "2.9.10-1",
      "2.9.19-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58210.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"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58210.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.14.3-1"
          }
        ]
      }
    ],
    "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",
      "2.14.1-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58210.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57988 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement