CVE-2026-55854

{
  "id": "CVE-2026-55854",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-55854",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-31T15:21:07.524278Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "mariadb-corporation",
          "product": "mariadb-connector-nodejs",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.2.4"
            },
            {
              "status": "affected",
              "version": ">= 3.3.0, < 3.3.3"
            },
            {
              "status": "affected",
              "version": ">= 3.4.0, < 3.4.6"
            },
            {
              "status": "affected",
              "version": ">= 3.5.0, < 3.5.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-28T23:17:08.203",
  "references": [
    {
      "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",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-319"
        },
        {
          "lang": "en",
          "value": "CWE-522"
        }
      ]
    }
  ],
  "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."
    }
  ],
  "lastModified": "2026-09-08T21:08:37.320",
  "sourceIdentifier": "security-advisories@github.com"
}