FKIE_CVE-2026-33216

Vulnerability from fkie_nvd - Published: 2026-03-25 20:16 - Updated: 2026-03-25 20:16
Severity ?
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Summary
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, for MQTT deployments using usercodes/passwords: MQTT passwords are incorrectly classified as a non-authenticating identity statement (JWT) and exposed via monitoring endpoints. Versions 2.11.14 and 2.12.6 contain a fix. As a workaround, ensure monitoring end-points are adequately secured. Best practice remains to not expose the monitoring endpoint to the Internet or other untrusted network users.
References
security-advisories@github.comhttps://advisories.nats.io/CVE/secnote-2026-05.txt
security-advisories@github.comhttps://github.com/nats-io/nats-server/commit/b5b63cfc35a57075e09c1f57503d31721bed8099
security-advisories@github.comhttps://github.com/nats-io/nats-server/security/advisories/GHSA-v722-jcv5-w7mc
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, for MQTT deployments using usercodes/passwords: MQTT passwords are incorrectly classified as a non-authenticating identity statement (JWT) and exposed via monitoring endpoints. Versions 2.11.14 and 2.12.6 contain a fix. As a workaround, ensure monitoring end-points are adequately secured. Best practice remains to not expose the monitoring endpoint to the Internet or other untrusted network users."
    }
  ],
  "id": "CVE-2026-33216",
  "lastModified": "2026-03-25T20:16:32.320",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-25T20:16:32.320",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://advisories.nats.io/CVE/secnote-2026-05.txt"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nats-io/nats-server/commit/b5b63cfc35a57075e09c1f57503d31721bed8099"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-v722-jcv5-w7mc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-256"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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