FKIE_CVE-2026-47784

Vulnerability from fkie_nvd - Published: 2026-05-20 07:16 - Updated: 2026-07-24 10:10
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass.
References
cve@mitre.orghttps://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fedPatch
cve@mitre.orghttps://github.com/memcached/memcached/compare/1.6.41...1.6.42Release Notes
cve@mitre.orghttps://github.com/memcached/memcached/wiki/ReleaseNotes1642Release Notes
Impacted products
Vendor Product Version
memcached memcached *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "memcached",
          "vendor": "memcached",
          "versions": [
            {
              "lessThan": "1.6.42",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4EA02C48-8B8D-4F73-9DA2-33B1535B1AF2",
              "versionEndExcluding": "1.6.42",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass."
    },
    {
      "lang": "es",
      "value": "En memcached antes de 1.6.42, los datos de contrase\u00f1a para la autenticaci\u00f3n de la base de datos de contrase\u00f1as SASL tienen un canal lateral de temporizaci\u00f3n porque memcmp es utilizado por sasl_server_userdb_checkpass."
    }
  ],
  "id": "CVE-2026-47784",
  "lastModified": "2026-07-24T10:10:00.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47784",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-20T12:20:56.239253Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-20T07:16:15.733",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/memcached/memcached/compare/1.6.41...1.6.42"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/memcached/memcached/wiki/ReleaseNotes1642"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-208"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    }
  ]
}



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