{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-47783",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "state": "PUBLISHED",
        "assignerShortName": "mitre",
        "dateReserved": "2026-05-20T05:43:46.363Z",
        "datePublished": "2026-05-20T05:43:46.976Z",
        "dateUpdated": "2026-08-17T12:04:58.021Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "memcached",
                    "vendor": "memcached",
                    "versions": [
                        {
                            "lessThan": "1.6.42",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "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"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-208",
                            "description": "CWE-208 Observable Timing Discrepancy",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
                "shortName": "mitre",
                "dateUpdated": "2026-05-20T05:43:46.976Z"
            },
            "references": [
                {
                    "url": "https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed"
                },
                {
                    "url": "https://github.com/memcached/memcached/compare/1.6.41...1.6.42"
                },
                {
                    "url": "https://github.com/memcached/memcached/wiki/ReleaseNotes1642"
                }
            ],
            "x_generator": {
                "engine": "CVE-Request-form 0.0.1"
            },
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*",
                                    "versionEndExcluding": "1.6.42"
                                }
                            ]
                        }
                    ]
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-20T12:49:50.253452Z",
                                "id": "CVE-2026-47783",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-05-20T12:49:58.195Z"
                }
            },
            {
                "affected": [
                    {
                        "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                        "cpes": [
                            "cpe:/o:redhat:enterprise_linux:10.2"
                        ],
                        "defaultStatus": "affected",
                        "packageName": "memcached",
                        "product": "Red Hat Enterprise Linux 10",
                        "vendor": "Red Hat",
                        "versions": [
                            {
                                "lessThan": "*",
                                "status": "unaffected",
                                "version": "0:1.6.23-7.el10_2.1",
                                "versionType": "rpm"
                            }
                        ]
                    },
                    {
                        "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                        "cpes": [
                            "cpe:/a:redhat:enterprise_linux:9"
                        ],
                        "defaultStatus": "affected",
                        "packageName": "memcached",
                        "product": "Red Hat Enterprise Linux 9",
                        "vendor": "Red Hat",
                        "versions": [
                            {
                                "lessThan": "*",
                                "status": "unaffected",
                                "version": "0:1.6.9-7.el9_8.1",
                                "versionType": "rpm"
                            }
                        ]
                    },
                    {
                        "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                        "cpes": [
                            "cpe:/o:redhat:enterprise_linux:6"
                        ],
                        "defaultStatus": "unaffected",
                        "packageName": "memcached",
                        "product": "Red Hat Enterprise Linux 6",
                        "vendor": "Red Hat"
                    },
                    {
                        "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                        "cpes": [
                            "cpe:/o:redhat:enterprise_linux:7"
                        ],
                        "defaultStatus": "unaffected",
                        "packageName": "memcached",
                        "product": "Red Hat Enterprise Linux 7",
                        "vendor": "Red Hat"
                    },
                    {
                        "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                        "cpes": [
                            "cpe:/o:redhat:enterprise_linux:8"
                        ],
                        "defaultStatus": "unaffected",
                        "packageName": "memcached",
                        "product": "Red Hat Enterprise Linux 8",
                        "vendor": "Red Hat"
                    }
                ],
                "datePublic": "2026-05-20T05:43:46.976Z",
                "descriptions": [
                    {
                        "lang": "en",
                        "value": "A flaw was found in memcached. A remote attacker can exploit a timing side channel during Simple Authentication and Security Layer (SASL) password database authentication. This vulnerability allows an attacker to observe subtle timing differences, which could be used to enumerate valid usernames."
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "content": {
                                "namespace": "https://access.redhat.com/security/updates/classification/",
                                "value": "Important"
                            },
                            "type": "Red Hat severity rating"
                        }
                    },
                    {
                        "cvssV3_1": {
                            "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"
                        },
                        "format": "CVSS"
                    }
                ],
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "cweId": "CWE-208",
                                "description": "Observable Timing Discrepancy",
                                "lang": "en",
                                "type": "CWE"
                            }
                        ]
                    }
                ],
                "references": [
                    {
                        "tags": [
                            "vdb-entry",
                            "x_refsource_REDHAT"
                        ],
                        "url": "https://access.redhat.com/security/cve/CVE-2026-47783"
                    },
                    {
                        "name": "RHBZ#2480089",
                        "tags": [
                            "issue-tracking",
                            "x_refsource_REDHAT"
                        ],
                        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480089"
                    },
                    {
                        "tags": [
                            "x_sadp-csaf-vex"
                        ],
                        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47783.json"
                    },
                    {
                        "tags": [
                            "vendor-advisory",
                            "x_refsource_REDHAT"
                        ],
                        "url": "https://access.redhat.com/errata/RHSA-2026:27842"
                    },
                    {
                        "tags": [
                            "vendor-advisory",
                            "x_refsource_REDHAT"
                        ],
                        "url": "https://access.redhat.com/errata/RHSA-2026:27862"
                    }
                ],
                "solutions": [
                    {
                        "lang": "en",
                        "value": "RHSA-2026:27842: Red Hat Enterprise Linux AppStream (v. 10)"
                    },
                    {
                        "lang": "en",
                        "value": "RHSA-2026:27862: Red Hat Enterprise Linux AppStream (v. 9)"
                    }
                ],
                "timeline": [
                    {
                        "lang": "en",
                        "time": "2026-05-20T07:00:55.885Z",
                        "value": "Reported to Red Hat."
                    },
                    {
                        "lang": "en",
                        "time": "2026-05-20T05:43:46.976Z",
                        "value": "Made public."
                    }
                ],
                "title": "memcached: memcached: Username enumeration via timing side channel",
                "x_adpType": "supplier",
                "x_generator": {
                    "engine": "sadp-cli 1.0.0"
                },
                "providerMetadata": {
                    "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
                    "shortName": "redhat-SADP",
                    "dateUpdated": "2026-08-17T12:04:58.021Z"
                }
            }
        ]
    }
}