CVE-2026-55854 (GCVE-0-2026-55854)

Vulnerability from cvelistv5 – Published: 2026-08-28 22:03 – Updated: 2026-08-28 22:03
VLAI
Title
MariaDB Connector/Node.js: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials in mariadb
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-319 - Cleartext Transmission of Sensitive Information
  • CWE-522 - Insufficiently Protected Credentials
Assigner
References
Impacted products
Vendor Product Version CPE status
mariadb-corporation mariadb-connector-nodejs Affected: < 3.2.4
Affected: >= 3.3.0, < 3.3.3
Affected: >= 3.4.0, < 3.4.6
Affected: >= 3.5.0, < 3.5.3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-319",
              "description": "CWE-319: Cleartext Transmission of Sensitive Information",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-522",
              "description": "CWE-522: Insufficiently Protected Credentials",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T22:03:30.200Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6"
        },
        {
          "name": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3"
        },
        {
          "name": "https://jira.mariadb.org/browse/CONJS-353",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jira.mariadb.org/browse/CONJS-353"
        }
      ],
      "source": {
        "advisory": "GHSA-42r5-vhpq-m858",
        "discovery": "UNKNOWN"
      },
      "title": "MariaDB Connector/Node.js: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials in mariadb"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55854",
    "datePublished": "2026-08-28T22:03:30.200Z",
    "dateReserved": "2026-06-17T16:44:40.995Z",
    "dateUpdated": "2026-08-28T22:03:30.200Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-55854",
      "date": "2026-08-29",
      "epss": "0.00278",
      "percentile": "0.19808"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-55854\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-28T23:17:08.203\",\"lastModified\":\"2026-08-28T23:17:08.203\",\"vulnStatus\":\"Received\",\"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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"mariadb-corporation\",\"product\":\"mariadb-connector-nodejs\",\"versions\":[{\"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\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-319\"},{\"lang\":\"en\",\"value\":\"CWE-522\"}]}],\"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\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.