FKIE_CVE-2026-55854

Vulnerability from fkie_nvd - Published: 2026-08-28 23:17 - Updated: 2026-08-28 23:17
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to 3.2.4, 3.3.3, 3.4.6, and 3.5.3, MariaDB Connector/Node.js can disclose an account password when PAM dialog authentication is negotiated over an insecure transport. In lib/cmd/handshake/auth/pam-password-auth.js and lib/cmd/handshake/authentication.js, the SendPamAuthPacketFactory behavior for the server-side plugin dialog lacked the secure-transport gate applied to mysql_clear_password. With the default sslMode=DISABLE and restrictedAuth=null settings, a hostile or on-path server can send an Authentication Switch Request for dialog over plain TCP, causing the connector to return the account password in cleartext. Properly verified TLS and a local Unix socket prevent this path, while fingerprint-only server identity validation is not sufficient. This issue is fixed in versions 3.2.4, 3.3.3, 3.4.6, and 3.5.3.
References
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3
security-advisories@github.comhttps://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858
security-advisories@github.comhttps://jira.mariadb.org/browse/CONJS-353
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mariadb-connector-nodejs",
          "vendor": "mariadb-corporation",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.2.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.3.0, \u003c 3.3.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.4.0, \u003c 3.4.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.5.0, \u003c 3.5.3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to 3.2.4, 3.3.3, 3.4.6, and 3.5.3, MariaDB Connector/Node.js can disclose an account password when PAM dialog authentication is negotiated over an insecure transport. In lib/cmd/handshake/auth/pam-password-auth.js and lib/cmd/handshake/authentication.js, the SendPamAuthPacketFactory behavior for the server-side plugin dialog lacked the secure-transport gate applied to mysql_clear_password. With the default sslMode=DISABLE and restrictedAuth=null settings, a hostile or on-path server can send an Authentication Switch Request for dialog over plain TCP, causing the connector to return the account password in cleartext. Properly verified TLS and a local Unix socket prevent this path, while fingerprint-only server identity validation is not sufficient. This issue is fixed in versions 3.2.4, 3.3.3, 3.4.6, and 3.5.3."
    }
  ],
  "id": "CVE-2026-55854",
  "lastModified": "2026-08-28T23:17:08.203",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-28T23:17:08.203",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://jira.mariadb.org/browse/CONJS-353"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-319"
        },
        {
          "lang": "en",
          "value": "CWE-522"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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